sour adj.

1 having a sharp taste

VERBS be, taste The sauce tasted very sour.

ADV. extremely, very | a bit, quite, rather, slightly

2 not fresh

VERBS be, smell, taste The milk smelled sour. | go, turn By the next day the wine had turned sour.

ADV. very | a bit, rather, slightly

3 bad-tempered

VERBS be | go, grow, turn | a bit, a little, rather, slightly, somewhat Their friendship has turned a little sour.

ADV. extremely, really, very