Synonyms of sour in English:

sour


See US English definition of sour

See UK English definition of sour

See Spanish definition of ácido

adjective

1‘too much pulp produces a sour wine’

SYNONYMS
acid, acidy, acidic, acidulated, tart, bitter, sharp, acetic, vinegary, pungent, acrid, biting, stinging, burning, smarting, unpleasant, distasteful
North American acerb
technical acerbic
rare acidulous
ANTONYMS

sweet

2‘milk bottles with traces of sour milk lingering in them’

SYNONYMS
bad, gone bad, off, gone off, turned, curdled, fermented, rancid
old, tainted, high, rank, foul, fetid, overripe
North American clabbered
ANTONYMS

fresh

3‘a sour old man’

SYNONYMS
embittered, resentful, nasty, spiteful, sharp-tongued, irritable, irascible, peevish, fractious, fretful, cross, crabbed, crabby, crotchety, cantankerous, curmudgeonly, disagreeable, petulant, pettish
complaining, querulous, bitter, moody, grumpy, huffy, scratchy, bad-tempered, ill-tempered, ill-natured, ill-humoured, sullen, surly, sulky, churlish, touchy, testy, tetchy, snappish, waspish, crusty, bilious, liverish, dyspeptic, splenetic, choleric
informal snappy, chippy, grouchy, cranky
British informal narky, ratty, eggy, stroppy, shirty, whingy, whingeing
North American informal peckish, sorehead, soreheaded
Australian, New Zealand informal snaky
informal, dated miffy, waxy
ANTONYMS

pleasant, amiable


verb

1‘five years of war had soured him’

SYNONYMS
embitter, make bitter, make resentful, anger, exasperate, disillusion, disenchant, poison, envenom, disaffect, dissatisfy, frustrate, alienate

2‘a dispute soured relations between the two countries for over a year’

SYNONYMS
spoil, mar, damage, harm, impair, be detrimental to, wreck, upset, hurt, worsen, poison, colour, blight, tarnish
ANTONYMS

improve