willing to believe or trust too readily, especially without proper or adequate evidence; gullible.
marked by or arising from credulity: a credulous rumor.

Origin of credulous

1570–80; < Latin crēdulus, equivalent to crēd(ere) to believe + -ulus adj. suffix denoting a quality or tendency; see -ous
Related formscred·u·lous·ly, adverbcred·u·lous·ness, nounnon·cred·u·lous, adjectivenon·cred·u·lous·ly, adverbnon·cred·u·lous·ness, nouno·ver·cred·u·lous, adjectiveo·ver·cred·u·lous·ly, adverbo·ver·cred·u·lous·ness, nounun·cred·u·lous, adjectiveun·cred·u·lous·ly, adverbun·cred·u·lous·ness, noun
Can be confusedcredible credulous

Synonyms for credulous

1. believing, trustful, unsuspecting. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for credulous

Contemporary Examples of credulous

Historical Examples of credulous

British Dictionary definitions for credulous



tending to believe something on little evidence
arising from or characterized by credulitycredulous beliefs
Derived Formscredulously, adverbcredulousness, noun

Word Origin for credulous

C16: from Latin crēdulus, from crēdere to believe
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 credulous

1570s, from Latin credulus "that easily believes, trustful," from credere "to believe" (see credo). Related: Credulously; credulousness.

Online Etymology Dictionary, © 2010 Douglas Harper