| Word | Definitions | Synonyms |
|---|---|---|
| fool | (verb) indulge in horseplay | Synonyms: arse around, fool around, horse around |
| (verb) fool or hoax | Synonyms: befool, cod, dupe, gull, put on, put one across, put one over, slang, take in | |
| (verb) spend frivolously and unwisely | Synonyms: dissipate, fool away, fritter, fritter away, frivol away, shoot | |
| (verb) make a fool or dupe of | Synonyms: befool, gull | |
| foolproof | (verb) proof against human misuse or error | Synonyms: goof-proof, goofproof |