[ mahy-tee ]
/ ˈmaɪ ti /

adjective, might·i·er, might·i·est.

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.

Nearby words

  1. might and main, with,
  2. might makes right,
  3. mightily,
  4. mightiness,
  5. mightn't,
  6. migmatite,
  7. mignon,
  8. mignonette,
  9. mignonne,
  10. migraine

Origin of mighty

before 900; Middle English; Old English mihtig. See might2, -y1

1. strong, puissant. See powerful. 2. immense, enormous, tremendous, sizable.

Related formsmight·i·ness, nouno·ver·might·y, adjectivequa·si-might·y, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mighty

British Dictionary definitions for mighty


/ (ˈmaɪtɪ) /

adjective mightier or 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 and Canadian (intensifier)he was mighty tired
Derived Formsmightiness, 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 mighty



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

Idioms and Phrases with mighty


see high and mighty.

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