• the property of being acidic
• the taste experience when vinegar or lemon juice is taken into the mouth
• a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar
• go Sour or spoil; "The milk has Soured"; "The wine worked"; "The cream has turned--we have to throw it out"
• make Sour or more Sour
• smelling of fermentation or staleness
• showing a brooding ill humor; "a dark scowl"; "the proverbially dour New England Puritan"; "a glum, hopeless shrug"; "he sat in moody silence"; "a morose and unsociable manner"; "a saturnine, almost misanthropic young genius"- Bruce Bliven; "a Sour temper
• inaccurate in pitch; "a false (or Sour) note"; "her singing was off key"
• having a sharp biting taste
• in an unpalatable state; "Sour milk"
• one of the four basic taste sensations; like the taste of vinegar or lemons

'Sour' in other languages