1) Authenticated 2) Bore out 3) Did geometry homework 4) Established 5) Established beyond doubt 6) Established validity 7) Evidenced 8) Proven 9) Showed to be true 10) Shown to be true 11) Tested 12) Tried 13) Validated 14) Verified 15) Well-tried 1) Evidenced 2) Proven 3) Tested 4) Tried 
• (imp. & p. p.) of Prove
[adj] - established beyond doubt
proved Established beyond doubt. Prove has two past participles: proved and proven. Proved is the older form. Proven is a variant. In the 20th century, proven has made inroads into the territory once dominated by proved, so that now the two forms compete on equal footing as participles; however, when used as an adjective before a noun, proven is ...
proven adjective established beyond doubt; `a proven liar`; `a Soviet leader of proven shrewdness`