Synonyms of bad in English:

bad


See definition of bad

adjective

1‘bad workmanship’

SYNONYMS
substandard, poor, inferior, second-rate, second-class, unsatisfactory, inadequate, unacceptable, not up to scratch, not up to par, deficient, imperfect, defective, faulty, shoddy, amateurish, careless, negligent
dreadful, awful, terrible, abominable, frightful, atrocious, disgraceful, deplorable, hopeless, worthless, laughable, lamentable, miserable, sorry, third-rate, diabolical, execrable
incompetent, inept, inexpert, ineffectual
informal crummy, rotten, pathetic, useless, woeful, bum, lousy, ropy, appalling, abysmal, pitiful, godawful, dire, poxy, not up to snuff, the pits
British informal duff, chronic, rubbish, pants, a load of pants
vulgar slang crap, shit, chickenshit
rare egregious
ANTONYMS

good, excellent, skilled

2‘the alcohol is having a bad effect on her health’

SYNONYMS
harmful, damaging, detrimental, undesirable, injurious, hurtful, inimical, dangerous, destructive, ruinous, deleterious
unhealthy, unwholesome
ANTONYMS

good, beneficial

3‘she had heard about him and his dissolute, bad life’

SYNONYMS
wicked, sinful, immoral, evil, morally wrong, corrupt, base, black-hearted, reprobate, depraved, degenerate, dissolute, amoral
criminal, villainous, nefarious, iniquitous, dishonest, dishonourable, unscrupulous, unprincipled
informal crooked, bent, dirty
archaic dastardly
ANTONYMS

virtuous

4‘Oscar sit down, you bad dog’

SYNONYMS
naughty, badly behaved, disobedient, wayward, wilful, self-willed, defiant, unruly, insubordinate, undisciplined, unmanageable, uncontrollable, ungovernable, unbiddable, disruptive, rebellious, refractory, recalcitrant
mischievous, full of mischief, playful, impish, roguish, puckish, rascally, prankish, tricksy
informal brattish, scampish
Scottish informal gallus
archaic contumacious
ANTONYMS

well behaved

5‘bad news’

SYNONYMS
unpleasant, disagreeable, unwelcome, unfortunate, unfavourable, unlucky, adverse, nasty
terrible, dreadful, awful, grim, distressing, regrettable
archaic, humorous parlous
ANTONYMS

good

6‘a recession is a bad time to try and sell a business’

SYNONYMS
inauspicious, disadvantageous, adverse, difficult, inopportune, unpropitious, inappropriate, unsuitable, unfavourable, unfortunate, untoward
informal disastrous
ANTONYMS

good

7‘a bad accident’

SYNONYMS
severe, serious, grave, critical, grievous, acute, dreadful, terrible, awful, ghastly, dire, grim, frightful, shocking
life-threatening
peracute
ANTONYMS

minor, slight

8‘the meat's gone bad’

SYNONYMS
rotten, off, decayed, decomposed, decomposing, putrid, putrefied, putrescent, mouldy, mouldering
sour, rancid, rank, unfit for human consumption
addled
maggoty, worm-eaten, wormy, flyblown
rare putrefactive, putrefacient
ANTONYMS

fresh

9‘a bad knee’

SYNONYMS
injured, wounded, diseased
British informal gammy, knackered
Australian, New Zealand informal crook
dated game

10‘if you still feel bad, stay in bed’

SYNONYMS
ill, unwell, sick, not well, not very well, ailing, poorly, sickly, peaky, afflicted, indisposed, infirm, liverish
out of sorts, not oneself, not in good shape, not up to par, below par, under par, in a bad way
bedridden, invalided, on the sick list, valetudinarian
queasy, nauseous, nauseated
weak, feeble, frail
diseased, infected
British off colour
informal under the weather, not up to snuff, laid up, dicky, funny, peculiar, iffy, crummy, lousy, rough, groggy, green about the gills, at death's door, like death warmed up
British informal ropy, grotty
Scottish informal wabbit
Australian, New Zealand informal crook
vulgar slang crappy
dated queer, seedy

11‘George always felt bad after shouting at her’

SYNONYMS
guilty, conscience-stricken, remorseful, guilt-ridden, ashamed, chastened, contrite, sorry, full of regret, regretful, repentant, penitent, shamefaced, self-reproachful, apologetic
ANTONYMS

unrepentant

12‘a bad cheque’

SYNONYMS
invalid, worthless
counterfeit, fake, false, spurious, fraudulent
informal bogus, phoney, dud

13‘bad language’

SYNONYMS
offensive, vulgar, crude, foul, obscene, rude, coarse, smutty, dirty, filthy, indecent, indecorous
blasphemous, profane

Phrases

    not bad

    ‘the bean casserole wasn't bad’


    SYNONYMS

    all right, quite good, good, adequate, acceptable, good enough, reasonable, fair, decent, average, tolerable, passable, middling, moderate, sufficiently good, fine

    informal

    OK, so-so, fair-to-middling

    North American, Australian, New Zealand informal

    jake

    ANTONYMS

    outstanding