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See more synonyms for deceitful on Thesaurus.com
  1. given to deceiving: A deceitful person cannot keep friends for long.
  2. intended to deceive; misleading; fraudulent: a deceitful action.
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Origin of deceitful

late Middle English word dating back to 1400–50; see origin at deceit, -ful
Related formsde·ceit·ful·ly, adverbde·ceit·ful·ness, nounun·de·ceit·ful, adjective

Synonyms for deceitful

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Antonyms for deceitful

1. honest. 2. genuine.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for deceitfully

unscrupulously, deceitfully, perfidiously

Examples from the Web for deceitfully

Historical Examples of deceitfully

  • These had either refused to Covenant to obey him, or had promised to him deceitfully.

    The Ordinance of Covenanting

    John Cunningham

  • And it will dishonour the truth which you deceitfully profess.

    A Christian Directory

    Baxter Richard

  • Tiberius was deceitfully told that the prince Drusus had died from sickness only.

    Under Csars' Shadow

    Henry Francis Colby

  • She was disobeying her step-mother, besides acting most deceitfully.

  • They often handled the prophecies unfairly if not deceitfully.

British Dictionary definitions for deceitfully


  1. full of deceit
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Derived Formsdeceitfully, adverbdeceitfulness, 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 deceitfully



mid-15c., from deceit + -ful. Related: Deceitfully; deceitfulness.

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Online Etymology Dictionary, © 2010 Douglas Harper