Antonym Substitutions

I. Lvg Command:

shell> lvg -f:zs -F:1:2

II. Test Cases:

ability|inability
abiotic|biotic
ablastemic|blastemic
able|unable
abnormal|normal
abnormal|normal
absence|presence
absent|present
absorbable|inabsorbable
absorbable|nonabsorbable
absorbable|unabsorbable
abundance|nonabundance
abundant|nonabundant
academic|nonacademic
academic|unacademic
acaudal|caudal
acaudal|caudate
acaudate|caudate
acaudate|caudated
accept|reject
acceptable|inacceptable
acceptable|nonacceptable
acceptable|unacceptable
accessible|inaccessible
accessible|nonaccessible
accessible|unaccessible
accidental|intentional
accidental|nonaccidental
accurate|inaccurate
acellular|cellular
acentric|centric
acholuric|choluric
achordal|chordal
achordate|chordate
achromatic|chromatic
acute|nonacute
acyanotic|cyanotic
acyclic|cyclic
adactylous|dactylous
adaptable|inadaptable
adaptable|nonadaptable
adaptable|unadaptable
avoidable|inevitable
avoidable|unavoidable
awake|asleep
aware|incognizant
aware|unaware
awned|awnless
bacterial|nonbacterial
bad|well
balance|unbalance
bar|unbar
barbed|barbless
barbed|unbarbed
barren|fertile
bumpy|bumpless
bumpy|smooth
can|can't
can|cannot
cancer|noncancer
cancerous|noncancerous
cannot|can
canonical|noncanonical
canonical|uncanonical
can't|can
capable|incapable
captivity|freedom
cariogenic|noncariogenic
caudal|acaudal
caudate|acaudal
caudate|acaudate
changeful|changeless
characteristic|uncharacteristic
charged|noncharged
cheerful|uncheerful
chemical|nonchemical
child|adult
could|couldn't
couldn't|could
countable|uncountable
cranial|acranial
crested|crestless
critical|acritical
critical|noncritical
critical|noncrucial
culprit|innocent
cultivated|uncultivated
culturable|nonculturable
culturable|unculturable
cultured|noncultured
curable|incurable
cyanotic|acyanotic
cyclic|acyclic
cyclic|non-cyclic
cyclic|non-cyclical
cyclic|noncyclic
cyclic|noncyclical
cytopathogenic|noncytopathogenic
dactylous|adactylous
danger|safety
dare|daren't
daren't|dare
dated|undated
degradable|nondegradable
dehiscent|indehiscent
deleterious|nondeleterious
delusional|nondelusional
direct|nondirect
directed|nondirected
directed|undirected
dirtiness|cleanness
dirty|clean
disagree|agree
disagree|concord
disagree|concur
disallow|allow
do|don't
does|doesn't
doesn't|does
dominant|nondominant
don't|do
doubt|trust
dreamful|dreamless
durable|fragile
dynamic|static
dynamic|stative
dynamic|undynamic
dysenteric|nondysenteric
eager|reluctant
eager|uneager
eared|earless
echoic|nonechoic
economical|uneconomical
eczematous|noneczematous
edible|inedible
edible|uneatable
effectful|effectless
effective|ineffectual
effective|noneffective
effectual|ineffective
effectual|ineffectual
effortful|effortless
either|neither
either|neither
ejection|nonejection
elastic|inelastic
elastic|nonelastic
elastic|unelastic
elderly|nonelderly
elective|nonelective
electric|nonelectric
equivalence|nonequivalence
equivocal|Y
equivocal|unambiguous
equivocal|unequivocal
eradicable|ineradicable
erosive|nonerosive
escapable|inescapable
essential|inessential
essential|nonessential
essential|unessential
etiological|anetiological
euploid|aneuploid
expired|unexpired
explicable|incomprehensible
explicable|inexplicable
expressive|expressionless
expressive|inexpressive
expressive|nonexpressive
exterior|interior
exterior|interior
external|internal
external|internal
extraordinary|ordinary
extraordinary|ordinary
extra-ordinary|ordinary
extra-ordinary|ordinary
extricable|inextricable
fact|fiction
faithful|faithless
faithful|unfaithful
fake|genuine
fake|real
fallible|infallible
false|true
falsehood|truth
familiar|nonfamiliar
familiar|unfamiliar
famous|nonfamous
fancy|plain
fat|non-fat
fat|nonfat
fatal|nonfatal
fatty|fat-free
fatty|fatless
fatty|non-fat
fatty|nonfat
fatty|nonfatty
fusional|fusionless
gamic|agamic
ganglionic|aganglionic
gastric|agastric
gated|nongated
gated|ungated
gendered|genderless
genderless|gendered
general|particular
general|special
general|specific
gentle|ungentle
genuine|counterfeit
genuine|fake
guileful|guileless
guiltless|guilty
guilty|clean-handed
guilty|guiltless
guilty|innocent
had|hadn't
hadn't|had
haemoglobinless|haemoglobinous
haemoglobinless|hemoglobinous
haemoglobinous|haemoglobinless
haemoglobinous|hemoglobinless
haired|hairless
hairless|haired
hairy|hairless
hairy|nonhairy
handicapped|nonhandicapped
happy|unhappy
harmful|harmless
harmonious|inharmonious
harmonious|unharmonious
harmony|discord
harsh|mild
has|hasn't
hasn't|has
have|abstain
have|haven't
have|lack
have-not|haves
haven't|have
haves|have-not
hazardous|hazardless
hazardous|nonhazardous
headed|headless
headed|unheaded
headless|headed
hypertensive|nonhypertensive
hypertrophic|nonhypertrophic
hypotensive|nonhypotensive
icteric|anicteric
icteric|nonicteric
identical|different
identical|nonidentical
idiomatic|unidiomatic
ignorance|knowledge
ill|good
ill|well
illegal|lawful
illegal|legal
illegible|legible
illegitimate|legitimate
illiterate|literate
imitable|inimitable
in|out
in|out
inaccurate|accurate
inactive|operational
inactive|operational
inadequate|adequate
inadmissable|admissable
inadmissible|admissible
inagglutinable|agglutinable
inalienable|alienable
inalimental|alimental
inalterable|alterable
inapplicable|applicable
irrepressible|repressible
irreproducible|reproducible
irresectable|resectable
irresistable|resistable
irresistible|resistible
irresolvable|resolvable
irrespirable|respirable
irretrievable|retrievable
irreversible|reversible
irrevocable|revocable
irritable|unirritable
is|isn't
ischaemic|nonischaemic
ischemic|nonischemic
isn't|is
isochromatic|anisochromatic
isodiametric|anisodiametric
isosmotic|anisosmotic
isotonic|anisotonic
jointed|jointless
jointless|jointed
jolly|unhappy
joyful|joyless
joyous|joyless
judgmentally|nonjudgmentally
justifiable|unjustifiable
knobbed|knobless
knobless|knobbed
knowledge|ignorance
known|unknown
known|unknown
lack|have
lack|plenty
ladylike|unladylike
lawful|illegal
lawful|unlawful
lecithal|alecithal
legal|illegal
legible|illegible
legitimate|illegitimate
leisurely|urgent
lesioned|nonlesioned
lesioned|unlesioned
lethal|nonlethal
leukocytic|aleukocytic
lexical|nonlexical
like|dissimilar
like|unlike
like|unlike
likely|improbable
limbed|limbless
limbless|limbed
limited|boundless
limited|limitless
limited|unlimited
limitless|limited
linear|nonlinear
lipogenic|alipogenic
literal|figurative
literate|illiterate
live|die
lively|languid
lobed|lobeless
lobeless|lobed
local|distant
local|nonlocal
logical|illogical
loose|tight
loser|winner
lossless|lossy
lossless|lossy
lossy|loss-less
lossy|lossless
loving|unloving
loyal|disloyal
lucky|luckless
lymphoblastic|nonlymphoblastic
lymphocytic|nonlymphocytic
maculate|immaculate
magnetic|nonmagnetic
mainstream|nonmainstream
major|minor
maleficence|nonmaleficence
maleficent|nonmaleficent
manageable|intractable
manageable|intractible
manageable|unmanageable
managed|unmanaged
manual|automated
manual|nonmanual
many|few
many|few
married|unmarried
massy|massless
material|immaterial
may|mayn't
mayn't|may
meaningful|meaningless
measurable|immeasurable
measurable|immensurable
measurable|unmeasurable
measured|unmeasured
mechanical|nonmechanical
medicable|immedicable
medical|nonmedical
medicinal|nonmedicinal
medullated|nonmedullated
medullated|unmedullated
membered|memberless
memberless|membered
membraned|membraneless
membraneless|membraned
metal|nonmetal
microbial|nonmicrobial
microbic|amicrobic
microfilaraemic|amicrofilaraemic
microfilaremic|amicrofilaremic
might|mightn't
mightn't|might
mild|harsh
mindful|unmindful
minor|major
mirthful|mirthless
miscible|immiscible
mobile|immobile
moderate|immoderate
modifiable|nonmodifiable
modifiable|unmodifiable
monetary|nonmonetary
moneyed|moneyless
moral|amoral
motile|immotile
motile|nonmotile
motor|nonmotor
movable|immovable
movable|unmovable
much|no
muscular|nonmuscular
musical|unmusical
must|mustn't
mustn't|must
mutable|immutable
myelic|amyelic
myelinated|nonmyelinated
myelinated|unmyelinated
myelinic|amyelinic
myeloablated|nonmyeloablated
myeloablative|nonmyeloablative
myelonic|amyelonic
native|foreign
native|nonnative
natural|nonnatural
natural|unnatural
necessary|nonnecessary
necessary|unnecessary
need|needn't
needful|needless
needless|needful
needn't|need
negligible|nonnegligible
neither|either
neither|either
neoplastic|nonneoplastic
neurogenic|aneurogenic
neuronal|nonneuronal
never|ever
nighttime|day-time
nighttime|day-time
nighttime|daytime
nighttime|daytime
night-time|day-time
night-time|day-time
night-time|daytime
night-time|daytime
nitrogenous|anitrogenous
nitrogenous|nonnitrogenous
no|yes
nocuous|innocuous
noise|silence
noisy|noiseless
noisy|silent
nonabsorbable|absorbable
nonacademic|academic
nonaccidental|accidental
nonacute|acute
nonadherence|adherence
nonadherent|adherent
nonadhesive|adhesive
nonadjacent|adjacent
nonadrenergic|adrenergic
nonaggression|aggression
nonaggressive|aggressive
nonalcoholic|alcoholic
nonalcoholic|alcoholic
nonalignment|alignment
nonalignment|alignment
nonalignment|alinement
nonalignment|alinement
nonallopathic|allopathic
nonantibiotic|antibiotic
nonantibiotic|antibiotic
nonantigenic|antigenic
nonargumentative|argumentative
nonaromatic|aromatic
nonarteriosclerotic|arteriosclerotic
nonarticular|articular
nonwoody|woody
nor|or
normal|abnormal
normal|abnormal
normal|anomalous
noxious|innoxious
nuclear|nonnuclear
nucleated|anucleated
nucleated|nonnucleated
nucleated|unnucleated
nutritional|nonnutritional
obey|disobey
objectionable|unobjectionable
obligatory|nonobligatory
obliterative|nonobliterative
observance|nonobservance
obstetric|nonobstetric
obstetrical|nonobstetrical
obstructive|nonobstructive
obtainable|unobtainable
obvious|nonobvious
occlusive|nonocclusive
occupational|nonoccupational
odorous|inodorous
odorous|nonodorous
odorous|odorless
odorous|odourless
odourous|inodorous
odourous|odorless
odourous|odourless
off|on
off|on
off|on
offensive|defensive
offensive|inoffensive
official|unofficial
often|infrequently
oliguric|nonoliguric
on|off
on|off
on|off
oncogenic|nononcogenic
opaque|nonopaque
open|closed
open|shut
operable|inoperable
operative|nonoperative
operatively|nonoperatively
opposable|nonopposable
or|nor
orchidic|anorchidic
ordinary|extra-ordinary
ordinary|extraordinary
ordinary|special
organic|anorganic
organic|inorganic
organic|inorganic
organic|nonorganic
original|unoriginal
osmatic|anosmatic
ought|oughtn't
oughtn't|ought
out|in
out|in
outer|inner
outside|in-door
outside|indoor
outside|indoors
outside|inside
outside|inside
outside|inside
outside|interior
outside|within
painful|painless
painfull|painless
painless|painful
painless|painfull
paired|unpaired
palatable|unpalatable
palpable|impalpable
palpable|nonpalpable
palpable|unpalpable
parallel|nonparallel
paralytic|aparalytic
paralytic|nonparalytic
parametric|nonparametric
parental|nonparental
parenteral|nonparenteral
parous|nonparous
paroxysmal|nonparoxysmal
particular|general
passible|impassible
passionate|passionless
passive|active
patient|nonpatient
patriotic|unpatriotic
payment|nonpayment
peace|commotion
penetrable|impenetrable
perceptible|imperceptible
perfect|imperfect
perforate|imperforate
periodic|aperiodic
permanent|impermanent
permanent|temporary
permeable|impermeable
permissible|impermissible
permit|forbid
persuasive|unpersuasive
pervious|imperviable
phacic|aphacic
phakic|aphakic
phosphagenic|aphosphagenic
photic|aphotic
photic|nonphotic
phototrophic|nonphototrophic
physical|psychological
physician|nonphysician
physiologic|unphysiologic
physiological|unphysiological
pigmented|nonpigmented
pigmented|pigment-less
pigmented|pigmentless
pigmented|unpigmented
pigmentless|pigmented
pigmentless|pigmented
pituitary|nonpituitary
placental|aplacental
placental|nonplacental
planful|planless
plasmic|aplasmic
pleasing|unpleasing
pleasurable|unpleasurable
pleasureful|pleasureless
plenty|lack
pliable|rigid
pneumatic|nonpneumatic
pneumonic|nonpneumonic
polar|nonpolar
polite|impolite
polite|rude
political|apolitical
porous|nonporous
possible|impossible
pouched|pouchless
pouchless|pouched
poverty|nonpoverty
powerful|powerless
practicable|unpracticable
precious|nonprecious
predictable|unpredictable
pregnant|nonpregnant
presence|absence
present|absent
pressurized|nonpressurized
pressurized|unpressurized
probable|unlikely
problematic|nonproblematic
problematic|unproblematic
productive|nonproductive
productive|unproductive
professional|amateur
professional|amateur
professional|nonprofessional
professional|nonprofessional
prohibit|allow
projective|nonprojective
pronounceable|unpronounceable
propitious|unpropitious
proportionate|disproportional
proportionate|disproportionate
protected|unprotected
protein|nonprotein
protic|aprotic
proud|humble
psychotic|nonpsychotic
psychotropic|nonpsychotropic
puerperal|nonpuerperal
pulmonary|nonpulmonary
punctual|unpunctual
punitive|nonpunitive
pure|contaminated
purposeful|purposeless
purulent|nonpurulent
pyogenic|nonpyogenic
pyogenous|apyogenous
pyretic|apyretic
pyrexial|apyrexial
pyrogenic|apyrogenic
qualified|nonqualified
qualified|unqualified
quantitative|nonquantitative
quenchable|quenchless
quenchless|quenchable
radiable|nonradiable
radioactive|nonradioactive
rainy|rainless
random|nonrandom
rational|irrational
rational|nonrational
reactive|nonreactive
reactive|unreactive
ready|unready
real|fake
realistic|unrealistic
reasonable|unreasonable
reassuring|nonreassuring
reciprocal|nonreciprocal
reconcilable|irreconcilable
reconcilable|unreconcilable
recoverable|irrecoverable
recoverable|unrecoverable
recurrent|nonrecurrent
reducible|irreducible
refutable|irrefutable
regardful|regardless
regenerative|aregenerative
regenerative|nonregenerative
regular|irregular
regularly|irregularly
reject|accept
rejection|acceptance
rejection|nonrejection
related|nonrelated
related|unrelated
relative|absolute
relative|nonrelative
relaxed|unrelaxed
relevant|irrelevant
reliable|unreliable
remarkable|unremarkable
remediable|irremediable
remember|forget
remorseful|remorseless
removable|irremovable
removable|nonremovable
renal|nonrenal
reparable|irreparable
repeatable|nonrepeatable
repeatable|unrepeatable
repeated|nonrepeated
repeated|unrepeated
repentant|impenitent
repentant|unrepentant
replaceable|irreplaceable
representative|nonrepresentative
representative|unrepresentative
repressible|irrepressible
reproducible|irreproducible
republic|dictatorship
rheumatoid|nonrheumatoid
rhythmic|arhythmic
rhythmic|nonrhythmic
right|incorrect
right|wrong
rigid|flexible
rigid|pliable
riskful|riskless
risky|riskless
rooted|rootless
rootless|rooted
rotational|nonrotational
routine|nonroutine
rural|nonrural
safe|unsafe
safety|danger
same|different
same|other
sane|insane
sanitary|unsanitary
saponifiable|nonsaponifiable
satiable|insatiable
savable|unsavable
saveable|unsaveable
scented|scentless
scented|unscented
scentless|scented
seasonal|nonseasonal
secretory|asecretory
secure|insecure
segmental|nonsegmental
selective|nonselective
selective|unselective
selfish|selfless
semantic|asemantic
senile|nonsenile
sensible|insensible
sensitive|nonsensitive
sentimental|unsentimental
separable|inseparable
separate|together
sepsis|asepsis
septate|nonseptate
septated|nonseptated
serious|frivolous
serious|nonserious
serous|nonserous
sexual|nonsexual
shakable|unshakable
shakeable|unshakeable
shall|shan't
shallow|deep
shan't|shall
should|shouldn't
shouldn't|should
shut|open
sighted|blind
sighted|sightless
sighted|unsighted
sightless|sighted
similar|dissimilar
simple|complex
simple|complicated
sincere|insincere
sinful|sinless
sink|float
sleeved|nonsleeved
sleeved|sleeveless
sleeveless|sleeved
small|nonsmall
smoking|nonsmoking
smooth|bumpy
sober|intoxicated
social|asocial
soluble|indissoluble
soluble|insoluble
solvent|insolvent
some|no
some|none
somebody|nobody
somebody|nobody
some-body|nobody
some-body|nobody
someone|no-one
someone|noone
someone|noöne
something|naught
something|nothing
something|nought
sophisticated|unsophisticated
soulful|soulless
speaker|nonspeaker
special|general
special|ordinary
specific|general
specific|nonspecific
specific|unspecific
specifically|nonspecifically
spined|spineless
spineless|spined
spirited|spiritless
sporogenic|asporogenic
sporous|asporous
stable|nonstable
stable|unstable
staphylococcal|nonstaphylococcal
stationary|nonstationary
steady|unsteady
stented|stentless
stented|unstented
stentless|stented
sterile|nonsterile
sterile|unsterile
steroidal|nonsteroidal
stop|continue
strained|unstrained
stringed|stringless
stringless|stringed
structural|nonstructural
structured|structure-less
structured|structureless
structured|unstructured
structureless|structured
structureless|structured
substantial|unsubstantial
successful|successless
successful|unsuccessful
sufficient|deficient
sufficient|insufficient
sufficient|unsufficient
sunny|sunless
supportable|insupportable
suppressible|nonsuppressible
suppurative|nonsuppurative
sure|incertain
sure|unsure
surgical|nonsurgical
surgically|nonsurgically
surmountable|insurmountable
surmountable|unsurmountable
susceptible|insusceptible
susceptible|unsusceptible
suspicious|suspicionless
suspicious|unsuspicious
sustained|nonsustained
sustained|unsustained
sweaty|sweatless
symmetric|asymmetrical
symmetric|unsymmetric
symmetrical|asymmetric
symmetrical|asymmetrical
symmetrical|unsymmetrical
symptomatic|asymptomatic
symptomatic|nonsymptomatic
synchronous|asynchronous
synchronous|nonsynchronous
syphilitic|nonsyphilitic
systolic|asystolic
tactful|tactless
tainted|untainted
tangible|impalpable
tangible|intangible
tasteful|tasteless
teachable|unteachable
tearful|tearless
tell|ask
tempered|untempered
temporary|permanent
tenable|untenable
teratogenic|nonteratogenic
teratoid|nonteratoid
terminable|interminable
textured|textureless
textureless|textured
thermal|athermal
thermal|nonthermal
thermosystaltic|athermosystaltic
thirsty|thirstless
thoughtful|thoughtless
thrifty|thriftless
thrifty|unthrifty
thyroid|nonthyroid
tight|loose
timely|untimely
titled|untitled
together|alone
together|apart
together|apart
together|separate
tolerable|intolerable
tolerant|nontolerant
top|bottom
Top|bottom
TOP|bottom
toxic|atoxic
toxic|nontoxic
toxigenic|atoxigenic
traceable|untraceable
tractable|intractable
tradable|untradable
tradeable|untradeable
trained|nontrained
trained|untrained
transmissible|intransmissible
transparent|nontransparent
transsexual|nontranssexual
traumatic|nontraumatic
treatable|untreatable
tremorous|tremorless
treponemal|nontreponemal
tropical|nontropical
true|false
true|untrue
trust|distrust
trust|doubt
trustworthy|untrustworthy
truth|falsehood
truth|untruth
truthful|untruthful
tuberculous|nontuberculous
typable|nontypable
typable|untypable
typeable|nontypeable
typeable|untypeable
typhoid|nontyphoid
typical|atypical
typical|nontypical
typical|untypical
ulcerative|nonulcerative
unable|able
unacceptable|acceptable
unaccessible|accessible
unadaptable|adaptable
unaffected|affected
unafraid|afraid
unaggressive|aggressive
unalignable|alignable
unaltered|altered
unambitious|ambitious
unamenable|amenable
unwilling|willing
urgent|leisurely
urgent|nonurgent
used|unused
usual|unusual
valent|nonvalent
valid|invalid
valuable|valueless
valuable|worthless
valued|valueless
valueless|valued
valved|valve-less
valved|valveless
valveless|valved
valveless|valved
valvular|nonvalvular
vaned|vaneless
vaneless|vaned
variable|constant
variable|invariable
vascular|nonvascular
vegetative|nonvegetative
veil|unveil
veined|veinless
veinless|veined
veiny|veinless
venereal|nonvenereal
venomous|nonvenomous
verbally|nonverbally
vertebrate|invertebrate
vertebrate|nonvertebrate
vertical|horizontal
vertical|horizontal
viable|nonviable
vincible|invincible
violable|inviolable
violence|nonviolence
violent|nonviolent
viral|nonviral
virulence|nonvirulence
virulent|nonvirulent
visible|invisible
visualisation|nonvisualisation
visualization|nonvisualization
voiced|unvoiced
voiced|voiceless
voiceless|voiced
voluntary|involuntary
vowel|consonant
wanted|unwanted
warm|chilly
was|wasn't
wasn't|was
wasteful|wasteless
wearable|unwearable
weightbearing|nonweightbearing
welcome|unwelcome
well|bad
well|badly
well|ill
well|poorly
well|unwell
were|weren't
weren't|were
white|nonwhite
will|won't
willing|unwilling
windowed|windowless
windowless|windowed
winged|wingless
wingèd|wingless
wingless|winged
wingless|wingèd
winner|loser
wise|foolish
wise|unwise
with|without
with|without
with|withoute
with|wythoute
with|wythowt
with|wythowte
within|outside
without|with
without|with
withoute|with
witty|witless
won't|will
woody|nonwoody
wordy|wordless
worst|best
worthful|worthless
would|wouldn't
wouldn't|would
wrinkled|wrinkleless
wrinkleless|wrinkled
wrong|correct
wrong|correctly
wrong|reight
wrong|right
wrong|rite
wythoute|with
wythowt|with
wythowte|with
yolked|yolkless
yolkless|yolked