demonstrated by evidence or argument to be true or existing

a proven ability to work hard

a proven risk to health

demonstrate the truth or existence of (something) by evidence or argument

the concept is difficult to prove

demonstrate to be the specified thing by evidence or argument

if they are proved guilty we won't trade with them

(of bread dough) become aerated by the action of yeast; rise

subject (a gun) to a testing process

firearms proved for black powder should not be used with smokeless ammunition