Third-person singular simple present indicative form of sour

The process by which something is made, or becomes, sour; acidification. / The process by which fabric is soured, washing out the lime by means of acid. / (dated) Any sour apple. / (dated) Vinegar.

plural of sour

Alternative spelling of sourpuss

Cream which has been treated with a benign bacterium to turn it slightly sour, often used as a condiment, or a topping for baked potatoes.

(literally) Grapes that are acid due to lacking maturity. / (idiomatic) Things that somebody pretends to despise because they cannot obtain or have.

(Britain, Australia, Canada) A cream that has been soured and thickened by using Lactobacillus bacteria; used in soups, salads and meat dishes such as beef Stroganoff.

a drink made from amaretto and a sweetened mixture of lemon or lime juice

(food) To spoil, rot, become sour. / (figuratively) To become unpleasing, unpleasant, unsatisfying; unfulfilling to one's wishes.

(slang) A particular cannabis hybrid with a pungent aroma reminiscent of diesel.