say it: uhn-KWES-chuh-nuh-buhl
unquestionable is an adjective meaning "incapable of being questioned". It carries 3 recorded senses.
incapable of being questioned
“unquestionable authority”
not counterfeit or copied
“an authentic signature”
“a bona fide manuscript”
“an unquestionable antique”
“photographs taken in a veritable bull ring”
Definitions, synonyms and semantic relations for unquestionable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.