Synonyms of foul in English:

foul


See definition of foul

adjective

1‘the skunk produces a foul stench’

SYNONYMS
disgusting, revolting, repellent, repulsive, repugnant, abhorrent, loathsome, offensive, detestable, awful, dreadful, horrible, terrible, horrendous, hideous, appalling, atrocious, vile, abominable, frightful, sickening, nauseating, nauseous, stomach-churning, stomach-turning, off-putting, uninviting, unpalatable, unappetizing, unsavoury, distasteful, nasty, obnoxious, objectionable, odious
noxious, evil-smelling, foul-smelling, smelly, stinking, high, rank, rancid, fetid, malodorous
North American vomitous
informal ghastly, horrid, gruesome, godawful, gross, diabolical, putrid, yucky, icky, grotty, sick-making, gut-churning
British informal beastly, whiffy, pongy, niffy
North American informal lousy, skanky, funky
Australian informal on the nose
literary noisome, mephitic
archaic disgustful, loathly
rare miasmic, miasmal, olid
ANTONYMS

fragrant

2‘get your foul clothes out of my bedroom’

SYNONYMS
dirty, filthy, mucky, grimy, grubby, stained, dirt-encrusted, muddy, muddied, unclean, unwashed
squalid, sordid, shabby, sleazy, nasty, soiled, sullied, scummy
rotten, defiled, decaying, putrid, putrefied, smelly, fetid
informal cruddy, yucky, icky
British informal manky, gungy, grotty
literary befouled, besmirched, begrimed
rare feculent

3‘she's been foul to poor Adam’

SYNONYMS
unkind, unfriendly, disagreeable, inconsiderate, uncharitable, rude, churlish, spiteful, malicious, mean, mean-spirited, ill-tempered, ill-natured, ill-humoured, bad-tempered, hostile, vicious, malevolent, evil-minded, surly, obnoxious, poisonous, venomous, vindictive, malign, malignant, cantankerous, hateful, hurtful, cruel, wounding, abusive
informal bitchy, catty
vulgar slang shitty
ANTONYMS

kind

4‘foul weather’

SYNONYMS
inclement, unpleasant, disagreeable, dirty, nasty, rough, bad
stormy, squally, gusty, windy, blustery, blowy, wild, rainy, wet
foggy, misty, gloomy, murky, overcast, louring
ANTONYMS

fair

5‘foul drinking water was blamed for the outbreak’

SYNONYMS
contaminated, polluted, adulterated, infected, tainted, defiled, impure, filthy, dirty, unclean
rare feculent
ANTONYMS

clean

6‘the foul fiend’

SYNONYMS
evil, wicked, sinful, immoral, wrong, morally wrong, wrongful, bad, iniquitous, corrupt, black-hearted, ungodly, unholy, irreligious, unrighteous, sacrilegious, profane, blasphemous, impious, base, mean, vile
villainous, nefarious, erring, fallen, impure, sullied, tainted, monstrous, shocking, outrageous, atrocious, abominable, reprehensible, hateful, detestable, despicable, odious, contemptible, horrible, heinous, execrable, godless, diabolical, diabolic, fiendish, vicious, murderous, barbarous, black, dark
perverted, reprobate, sordid, depraved, degenerate, dissolute, dishonourable, dishonest, unscrupulous, unprincipled, underhand, roguish
criminal, illicit, unlawful, illegal, illegitimate, lawless
informal crooked, bent, warped, low-down, stinking, dirty, shady, rascally, scoundrelly
British informal beastly, not cricket
malfeasant
archaic dastardly
rare peccable, egregious, flagitious
ANTONYMS

righteous

7‘she had been subjected to abuse and foul language’

SYNONYMS
vulgar, obscene, profane, blasphemous, gross, coarse, crude, filthy, dirty, indecent, indelicate, suggestive, smutty, off colour, low, lewd, ribald, salacious, scatological, offensive, abusive
informal blue
ANTONYMS

mild

8‘he was booked for a foul tackle in the 67th minute’

SYNONYMS
unfair, against the rules, illegal, unsporting, unsportsmanlike, below the belt, dirty, dishonourable, dishonest, underhand, unscrupulous, unjust, unprincipled, immoral, crooked, fraudulent
informal shady
ANTONYMS

fair


verb

1‘every stream was being fouled with chemical waste’

SYNONYMS
dirty, soil, stain, blacken, muddy, begrime, splash, spatter, smear, befoul, besmirch, blight, defile, make filthy, infect, pollute, contaminate, poison, taint, adulterate, sully
literary besmear

2‘the vessel had fouled her nets’

SYNONYMS
tangle up, entangle, snarl, catch, entwine, enmesh, twist, tangle

3‘the rivers have been fouled by silt’

SYNONYMS
clog, choke, block, jam, obstruct, congest, bung up, dam, dam up, plug, silt up, stop up, seal, fill up, close
informal gunge up
technical occlude, obturate