[ in-krej-uh-luhs ]
/ ɪnˈkrɛdʒ ə ləs /


not credulous; disinclined or indisposed to believe; skeptical.
indicating or showing unbelief: an incredulous smile.

Origin of incredulous

From the Latin word incrēdulus, dating back to 1525–35. See in-3, credulous
Related formsin·cred·u·lous·ly, adverbin·cred·u·lous·ness, noun
Can be confusedincredible incredulous

Synonym study Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for incredulous

British Dictionary definitions for incredulous


/ (ɪnˈkrɛdjʊləs) /


(often foll by of) not prepared or willing to believe (something); unbelieving
Derived Formsincredulously, adverbincredulousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for incredulous



"unbelieving," 1570s, from Latin incredulus "unbelieving, incredulous," from in- "not" (see in- (1)) + credulus (see credulous). Formerly also of religious beliefs. Related: Incredulously; incredulousness.

Online Etymology Dictionary, © 2010 Douglas Harper