proof Synonyms - page 2

touchstone weatherproof wherefore trial impression paper trail page proof galley proof soundproof monetisation burglarproof watertight bulletproof pop quiz proof positive test copy cogent evidence smoking gun rustproof rehydrate rededication rainproof proving ground gawker boy scout leakproof test case litmus test sampling deductive reasoning inspection unsusceptible worldliness witness object lesson artificial insemination credentials exam stereo CER grounds tryout hallmark airtight why resistant eyewitness definiteness data criterion credential