[ mahy-tee ]
/ ˈmaɪ ti /
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See synonyms for: mighty / mightiest on Thesaurus.com

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.
noun Usually the mighty .(used with a plural verb)
mighty persons collectively: the rich and the mighty.
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Origin of mighty

First recorded before 900; Middle English; Old English mihtig; see might2, -y1

synonym study for mighty

1. See powerful.


might·i·ness, nouno·ver·might·y, adjectivequasi-mighty, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does mighty mean?

Mighty means extremely strong (as in a mighty warrior) or powerful (as in a mighty king).

The noun might most commonly means great strength or power. People who are mighty in this way are sometimes referred to collectively as the mighty, in the same way that the rich is sometimes used, as in The rich and mighty hold all the power. The expression how the mighty have fallen is used to comment on a once powerful or popular person or thing that is now much less powerful or popular.

Mighty can also mean of great size—especially big for its kind, as in a mighty oak.    

Less commonly, mighty means of great importance, as in a mighty accomplishment.

Sometimes, mighty is used as a very informal way of saying very or extremely, as in That’s a mighty fine hat you’re wearing. This use of mighty can sound a bit old-fashioned or folksy.

The adverb form of mighty is mightily.

The phrase high and mighty is often used as an adverb meaning in an arrogant or self-important manner, as in Please stop acting so high and mighty—you’re not the boss here. It can also be used as an adjective, in which case it’s often hyphenated (high-and-mighty). The phrase can also be used as a collective noun in the same way that mighty can, as in The high and mighty take too much and give too little. 

Example: He was a mighty ruler, and his empire extended to the ends of the earth.

Where does mighty come from?

The first records of the word mighty come from before the 900s. It comes from the Old English mihtig. The suffix -y is used to make the noun might into an adjective.

Mighty is used in many names in pop culture and fiction, such as Mighty Mouse, the Mighty Morphin Power Rangers, and the Mighty Ducks. The superhero Thor calls his fellow Avengers “Earth’s mightiest heroes.”

The proverb “Mighty oaks from little acorns grow” means that big and powerful things often have small beginnings.

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What are some other forms related to mighty?

  • mightier (comparative adjective)
  • mightiest (superlative adjective)
  • mightiness (noun)
  • mightily (adverb)
  • might (noun)

What are some synonyms for mighty?

What are some words that share a root or word element with mighty

What are some words that often get used in discussing mighty?

How is mighty used in real life?

Mighty can sound somewhat formal or old-fashioned—it’s more common to describe things as strong or powerful.


Try using mighty!

Which of the following words is NOT a synonym of mighty?

A. medium
B. imposing
C. powerful
D. strong

How to use mighty in a sentence

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 forms of mighty

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

Other 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.