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.

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

mightiness, noun
overmighty, adjective
quasi-mighty, adjective

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

1. feeble. 2. small.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To mighty
World English Dictionary
mighty (ˈmaɪtɪ)
adj , mightier, mightiest
1.  a.  having or indicating might; powerful or strong
 b.  (as collective noun; preceded by the): the mighty
2.  very large; vast
3.  very great in extent, importance, etc
4.  informal chiefly (US), (Canadian) (intensifier): he was mighty tired

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

O.E. mihtig, earlier mæhtig, from miht (see might (n.)). As an adverb, it is attested from c.1300, though now considered colloquial.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Idioms & Phrases


see high and mighty.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
Cite This Source
Example sentences
Dams, irrigation and now climate change have drastically reduced the once-mighty river.
Eco-ethics seem to be all but forgotten of late in pursuit of the all-mighty dollar.
Anyone who has ever smelled a durian fruit can tell you that it smells mighty strong.
It's mighty important, mind you, but a big part of me sees all of that as pure tedium.
Idioms & Phrases
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature