sour
Proposed by a contributor, not yet supported by evidence.
Also seen as: sourer · sourest · sours · souring
Sense 1
Tasting of acidity.
Adjective
Examples
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Made rancid by fermentation, etc.
Adjective
Examples
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 3
The sensation of a sour taste.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 4
A drink made with whiskey, lemon or lime juice and sugar.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “sour” mean?
Tasting of acidity.
Is “sour” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.