Etymology
From full + proof (“measure of alcohol content”).
Adjective
full-proof (not comparable)
- Containing the full amount of alcohol; not being a low-alcohol variant.
2023 March 24, Laura Reiley, “Could nonalcoholic wine be the toast of the town?”, in The Washington Post:This added freedom can be confusing for consumers and store designers: Where should these products go? Next to their full-proof cousins or over by the soda pop?