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[in-krej-uh-luh s] /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 forms
incredulously, adverb
incredulousness, noun
Can be confused
incredible, incredulous.
Synonym Study
See doubtful. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for incredulously
Contemporary Examples
Historical Examples
  • I looked at him incredulously, and my father's face expressed no little astonishment.

    Freeland Theodor Hertzka
  • He was studying it incredulously, when Sunnysides suddenly resolved all doubts.

    The Heart of Thunder Mountain Edfrid A. Bingham
  • She raised her eyes, and Lieut. D'Hubert stared into them incredulously.

    A Set of Six Joseph Conrad
  • Thorvald stared at him incredulously, then with a growing spark of interest.

    Storm Over Warlock Andre Norton
  • She thought she saw him look at her incredulously in the dark, but was not sure.

    The Call of the Blood

    Robert Smythe Hichens
  • They looked at him incredulously, all except Boolba, who had heard the story before.

    The Book of All-Power Edgar Wallace
British Dictionary definitions for incredulously


(often foll by of) not prepared or willing to believe (something); unbelieving
Derived Forms
incredulously, adverb
incredulousness, 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
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Word Origin and History for incredulously



"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
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