verb
1.
to establish a point by appropriate objective means
gathered evidence that proved the need for better controls
Synonyms: demonstrate, test, try
Related Word: confirm, corroborate, substantiate, verify; argue, attest, bespeak, betoken, indicate
Antonyms: disprove; refute
2.
Synonyms: try 1, check, examine, test
3.
Synonyms: establish 6, demonstrate, determine, make out, show