adjective

sour

sour, unpleasant, off

This lemon is very sour.

This lemon is very sour.

The milk has gone sour.

The milk has gone off.

He gave me a sour look.

He gave me a sour look.

to be sour having an acid taste The candy is sour.

to go sour to become bad or unpleasant The deal went sour at the last minute.

a sour ((look/note)) unfriendly or unpleasant She ended the conversation on a sour note.

Synonyms: tart, acidic, sharp; Antonyms: sweet, pleasant

From Old English 'sūr', from Proto-Germanic. Related to German 'sauer'.

Imagine biting a lemon and your face puckering up. That's the feeling of 'sour'.

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