havingbeing or inducing an acid taste similar to that of vinegar, lemons, etc, one of the four basic taste sensations: compare bitter1, salt3, sweet1
sour pickles
having the acid taste or smell of fermentation; turned
sour milk
smelling or tasting of fermentation or decay; rancid or rotten
sour breath
disenchanted or embittered
a sour woman
said of soil: excessively acidic
said of petroleum products: containing foul-smelling sulphur compounds
go/turn sour
to turn out wrong or badly
The project had gone sour
to become unpleasant or less harmonious
Their relationship turned sour
sourish adj
sourly adv
sourness noun
[Old English sūur]