Verb (*third-person singular simple present* proves, *present participle* proving, *simple past* proved, *past participle* proved or proven)

- To demonstrate that something is true or viable; to give proof for.
*I will prove that my method is more effective than yours.**The hypothesis has not been proven to our satisfaction.*

- (intransitive) To turn out; to manifest.
*It proved to be a cold day.*

- (copulative) To turn out to be.
*Have an exit strategy should your calculations prove incorrect.*

- To put to the test, to make trial of.
*They took the experimental car to the proving-grounds.**The exception proves the rule.*

- To ascertain or establish the genuineness or validity of; to verify.
*to prove a will*

- (archaic) To experience
- (printing, dated) To take a trial impression of; to take a proof of.
*to prove a page*

Origin From Middle English *proven*, from Old English *prÅfian* (“to esteem, regard as, evince, try, prove"), from Late Latin *probÅ* (“test, try, examine, approve, show to be good or fit, prove", *verb*), from *probus* (“good, worthy, excellent"), from Proto-Indo-European **pro-bhwo-* (“being in front, prominent"), from Proto-Indo-European **pro-*, **per-* (“toward") + Proto-Indo-European **bhu-* (“to be"). Influenced by Old French *prover*, from the same Latin source. Displaced native Middle English *sothen* (“to prove"), from Old English *sÅÃ¾ian* (“to prove"). More at for, be, soothe.

Origin Simple past form of *proove*, conjugated in the Germanic strong declension, on the pattern of *choose* â†’ *chose*.