Synonymes sour (anglais)

Verbe
- action : turn, spoil, ferment, curdle, acidify, acerbate, envenom

Adjectif
- behaviour : cross, irritable, peevish, short-tempered, testy, touchy, grouchy, acrimonious
- language : distasteful, bitter, irritating, vitriolic, unsavoury, unpleasant, disagreeable
- property : caustic, cutting, stinging, sharp, keen, biting, harsh, dry
- state : unripe, green
- taste : bitter, tart, tangy, acerb, rancid, acerbic, acidulous