• synonyms


or gul·la·ble

[guhl-uh-buh l]
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  1. easily deceived or cheated.

Origin of gullible

First recorded in 1815–25; gull2 + -ible
Related formsgul·li·bil·i·ty, noungul·li·bly, adverb


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credulous, trusting, naive, innocent, simple, green.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for gullibility

Contemporary Examples

Historical Examples

  • But anger at my own gullibility had killed her power to draw me, and I shook her off.

  • We seem to identify imagination with gullibility or vague thinking.

    Here and Now Story Book

    Lucy Sprague Mitchell

  • From a physiological point of view the gullibility of the audience is astounding.

    Indian Conjuring

    L. H. Branson

  • True, there are limits to its gullibility; there are suggestions from which it recoils.

  • Sampson sat meditating on the gullibility of man in matters medical.

    Hard Cash

    Charles Reade

British Dictionary definitions for gullibility


  1. easily taken in or tricked
Derived Formsgullibility, noungullibly, adverb
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 gullibility


1793, earlier cullibility (1728), probably from gull (n.2) "dupe, sucker" + -ability.



1825, apparently a back-formation from gullibility. Gullable is attested from 1818.

Online Etymology Dictionary, © 2010 Douglas Harper