sour Definition

sour
adj sourer, sourest

1. Having an acid taste or smell, similar to that of lemon juice or vinegar.

Thesaurus: tart, acidic, acrid, bitter, sharp, lemony, harsh, pungent, vinegary; Antonym: sweet.
2. Rancid or stale because of fermentation.

Example: sour milk
3. Sullen; miserable; embittered.

Example: the sourest face I've ever seen
Thesaurus: ill-natured, grouchy, irritable, acrimonious, crabby, cynical, churlish, embittered, jaundiced, peevish, down, ill-tempered.
4. Unpleasant, unsuccessful or inharmonious.

Example: The marriage turned sour
5. Said of an alcoholic drink: with lemon or lime juice added to it.

Example: brandy sour

verb

tr & intr
soured, souring
1. To make or become sour.

Thesaurus: disenchant, embitter, envenom, ferment, spoil, acerbate.

Derivative: soured
adj

Example: soured cream

Derivative: souring
noun

Derivative: sourish
adj

Derivative: sourishly
adverb

Derivative: sourly
adverb

Derivative: sourness
noun

Etymology: Anglo-Saxon sur.