mightily
Americanadverb
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in a mighty manner; powerfully or vigorously.
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to a great extent or degree; very much.
to desire something mightily.
adverb
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to a great extent, amount, or degree
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with might; powerfully or vigorously
Usage
What does mightily mean? Mightily means with might—great strength or power. To do something mightily is to do it in a strong or powerful way. Mightily is the adverb form of the adjective mighty, which means extremely strong (as in a mighty warrior) or powerful (as in a mighty king). Sometimes, mighty is used as a very informal way of saying very or extremely, and mightily can be used in a similar way to mean very or very much, as in I’m mightily impressed. This use of mightily can sound a bit old-fashioned or folksy. Example: He ruled mightily, and his empire extended to the ends of the earth.
Etymology
Origin of mightily
before 900; Middle English; Old English mihtiglīce. See mighty, -ly
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Edmunds put the vehicle through a 227-point evaluation process and came away impressed, saying it would deliver a premium interior and cutting-edge tech and compete mightily at its price point.
From The Wall Street Journal • Apr. 29, 2026
It’s a stalemate that even a clever strategist would struggle mightily to resolve, and there is no evidence that Vance is an especially strategic thinker.
From Salon • Apr. 27, 2026
The “Magnificent Seven” group of magacap tech stocks have contributed mightily to the S&P 500’s returns since the current bull market began in late 2022.
From MarketWatch • Mar. 19, 2026
Instead, 10 games into his college career, Arenas is struggling mightily with his offensive efficiency.
From Los Angeles Times • Feb. 25, 2026
“It is indeed. It seems almost foolish to ask,” said Slughorn, who was looking mightily impressed, “but I assume you know what it does?”
From "Harry Potter and the Half-Blood Prince" by J.K. Rowling
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
