Whisky drinks

• Worsens, as relations
• Becomes unpleasant
• Stops being palatable
• Becomes bitter
• Turns, perhaps
• Some cocktails
• Turns bad, like milk
• Turns, as milk

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sours \Sours\, n. Source. See Source . [Obs.] --Chaucer.