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[mahy-tee] /ˈmaɪ ti/
adjective, mightier, mightiest.
having, characterized by, or showing superior power or strength:
mighty rulers.
of great size; huge:
a mighty oak.
great in amount, extent, degree, or importance; exceptional:
a mighty accomplishment.
Informal. very; extremely:
I'm mighty pleased.
(used with a plural verb) mighty persons collectively (usually preceded by the):
the rich and the mighty.
Origin of mighty
before 900; Middle English; Old English mihtig. See might2, -y1
Related forms
mightiness, noun
overmighty, adjective
quasi-mighty, adjective
1. strong, puissant. See powerful. 2. immense, enormous, tremendous, sizable.
1. feeble. 2. small. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for mightiness
Historical Examples
  • His high and mightiness had the whole story of the accident from some tattle-tale.

  • He could not appreciate—no man can—the mightiness of female cunning.

    What Will He Do With It, Complete Edward Bulwer-Lytton
  • They are at my house, your mightiness; send some one with me, and I will give them up.

    For Fortune and Glory Lewis Hough
  • An attempt was made to induce us to remain at a respectful distance from his mightiness.

    Eothen A. W. Kinglake
  • The mightiness of the sea, like the mightiness of the mountain, draws mankind.

    A Floating Home Cyril Ionides
  • An attempt was made to induce us to remain at a p. 304respectful distance from his mightiness.

    Eothen A. W. Kinglake
  • The first step the giant took showed the mightiness of his stride.

  • Love was all about thee, curled in its mightiness around all thou hadst to do with.

    The Browning Cyclopdia Edward Berdoe
  • "It will do Your mightiness good to mingle with the proletariat," he grinned.

    Simon the Jester William J. Locke
  • mightiness, a woman of the Hebrews escaped from Bethulia to find water!

    Judith Arnold Bennett
British Dictionary definitions for mightiness


adjective mightier, mightiest
  1. having or indicating might; powerful or strong
  2. (as collective noun; preceded by the): the mighty
very large; vast
very great in extent, importance, etc
(informal, mainly US & Canadian) (intensifier): he was mighty tired
Derived Forms
mightiness, 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 mightiness

Old English mihtinesse; see mighty + -ness.



Old English mihtig, earlier mæhtig, from miht (see might (n.)). Cf. Old Frisian mechtig, Old Saxon mahtig, Dutch machtig, German mächtig. As an adverb, it is attested from c.1300, though now considered colloquial.

Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with mightiness


The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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