adverb
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to or in a double degree, quantity, or measure
doubly careful
-
in two ways
doubly wrong
Etymology
Origin of doubly
Middle English word dating back to 1350–1400; see origin at double, -ly
Explanation
The adverb doubly means "twice as" or "double." If your new French class is doubly hard as last year's class, it's two times harder. Sometimes people use doubly for general emphasis, to mean "very" or "especially." Your boss might say, "Today's doubly important because the owner of the company will be observing our work." Or you might feel doubly hungry for breakfast after a morning swim. Doubly comes from the adjective double, with its Latin root of duplus, "twofold or twice as much," from duo, "two."
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.
“Obviously, doubly special because it’s during a World Cup and triple special because it’s here in the U.S. “As a group, with all our different backgrounds, it’s a true representation of what America is.
From Los Angeles Times ● Jul. 4, 2026
All good points, but what’s good for high earners is doubly true for lower earners.
From MarketWatch ● Jun. 26, 2026
Aston Villa's Morgan Rogers has been doubly honoured by West Midlands Police, with his first and last name being used for the remaining two puppies.
From BBC ● Jun. 18, 2026
"We were able to isolate an intermediate structure from our ruthenium complex formation reaction and characterize this with single-crystal X-ray diffraction. Surprisingly, we found the structure to be doubly ring-slipped," says Takebayashi.
From Science Daily ● May 22, 2026
If she was impressed with Jennifer, she was going to be doubly impressed with me because I knew my lines and everyone else’s too.
From "It All Comes Down to This" by Karen English
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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.