from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Easily deceived or duped.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Easily deceived or duped; naïve, easily cheated or fooled.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Easily gulled; that may be duped.

from The Century Dictionary and Cyclopedia

  • Easily gulled or cheated.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. easily tricked because of being too trusting
  • adj. naive and easily deceived or tricked


From gull2.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Either gull +‎ -ible, or from dialect Middle English gull ("newly hatched bird"), perhaps from Old Norse gulr, from the hue of its down. (Wiktionary)



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  • WORD: gullible

    EXAMPLE from Charlotte's Web:

    "Why, how perfectly simple!" she said to herself. "The way to save Wilbur's life is to play a trick on Zuckerman. If I can fool a bug," thought Charlotte, "I can surely fool a man. People are not as smart as bugs."

    Wilbur walked into his yard at just that moment.

    "What are you thinking about, Charlotte?" he asked.

    "I was just thinking," said the spider, "that people are very gullible."

    "What does 'gullible' mean?"

    "Easy to fool," said Charlotte.

    -- 1952 E.B. WHITE. Charlotte's Web. Chapter X -- An Explosion (page 67).

    September 25, 2013

  • This does not mean that love is gullible, but that it does not think the worst (as is the way of the world). It retains its faith. Love is not deceived . . . but it is always ready to give the benefit of the doubt. ODB May-11, 2011.

    May 11, 2011

  • I have it on good authority that it won't be included in the 2009 OED

    January 23, 2008

  • "Gullible" isn't listed in Theodore Bernstein's Reverse Dictionary.

    November 30, 2007

  • Made you look!

    November 30, 2007