- 1
Tasting of acidity.
- Lemons have a sour taste.
- 2
Made rancid by fermentation, etc.
- Don't drink that milk; it's turned sour.
- 3
Tasting or smelling rancid.
- His sour breath makes it unpleasing to talk to him.
- 4
Hostile or unfriendly.
- He gave me a sour look.
- 5
Excessively acidic and thus infertile. (of soil)
- sour land
- a sour marsh
- 6
Containing excess sulfur. (of petroleum)
- sour gas smells like rotten eggs
- 7
Unfortunate or unfavorable.
- Let me embrace thee, sour adversity
- 8
Off-pitch, out of tune.
- Unlike what the name implies, there is nothing inherently wrong with a sour note: It is perfectly well-tuned note that would sound normal in another context (and which presumably would not sound sour to someone unfamiliar with tonal music).
syn. acetose · acetous · acid · acidulent · sour · tart
ant. sweet