in·credulous \(ˈ)in, ən+\adjective Etymology: Latin incredulus, from in- in- (I) + credulus credulous — more at credulous 1.: indisposed to admit or accept what is related as true < incredulous of such statements > 2.: caused by disbelief or incredulity < an incredulous stare > 3.obsolete: not to be believed : incredible • in·credulously\“+\adverb • in·credulousness\“+\noun