prove

verb

1.
be shown or be found to be
2.
establish the validity of something, as by an example, explanation or experiment
Antonym:
disprove
4.
prove formally; demonstrate by a mathematical, formal proof
5.
put to the test, as for its quality, or give experimental use to
6.
increase in volume
7.
cause to puff up with a leaven
8.
take a trial impression of
9.
obtain probate of