I'm looking for a word (noun)..?

Question

for when you're trying to reinforce a statement or prove something..

Thanks for the help. :)

Answer 1

you are describing a verb. but some nouns for that definition are clarity, elucidation, evidence, support. those are just a few. you should get a thesaurus.

Answer 2

p***y

Answer 3

Ascertain.

Answer 4

Confirm, authenticate, corroborate, justify, substantiate, validate, verify, attest, certify, and vouch may work, depending on the situation.