French word preuve comes from Proto-Indo-European *pr̥-, Proto-Indo-European *bhu-, and later Old French prueve (Proof (evidence).)
| Dictionary entry | Language | Definition |
|---|---|---|
| *pr̥- | Proto-Indo-European (ine-pro) | |
| *bhu- | Proto-Indo-European (ine-pro) | |
| *pro-bhwo- | Proto-Indo-European (ine-pro) | |
| probus | Latin (lat) | (morally) upright, honest, virtuous. Good, serviceable, excellent, superior, able. |
| probare | Latin (lat) | |
| prueve | Old French (fro) | Proof (evidence). |
| proba | Latin (lat) | (Late Latin) test, trial. Proof, evidence. |
| preuve | French (fra) | Proof. |