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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
1525-35; < Latin incrēdulus. See in-3, credulous
Related forms
incredulously, adverb
incredulousness, noun
Can be confused
incredible, incredulous.
unbelieving. 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
  • And then his smile dawned, slowly, incredulously, till the glory of assurance had become convincing.

    The Pursuit Frank (Frank Mackenzie) Savile
  • "I don't believe you'd light 'em all at once," he added, incredulously.

  • "I don't believe you'll have the heart to do it," said Charlie incredulously as he sealed the last note.

    Rose in Bloom Louisa May Alcott
  • He shook his head, not incredulously, but defiantly at fate.

    The Golden Dog William Kirby
  • Mr. Beamish questioned her most incredulously, half-smiling.

  • "I don't know what service you can do me," said Squire Hudson incredulously.

    The Young Adventurer Horatio Alger
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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