say it: uh-THEN-tik
authentic is an adjective meaning "conforming to fact and therefore worthy of belief". It carries 2 recorded senses.
conforming to fact and therefore worthy of belief
“an authentic account by an eyewitness”
“reliable information”
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 authentic 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.