doubly

American  

[duhb-lee] / ˈdʌb li /

adverb

1. to a double measure or degree.

   to be doubly cautious.

2. in a double manner.

3. Obsolete. with duplicity.

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doubly British  

/ ˈdʌblɪ /

adverb

1. to or in a double degree, quantity, or measure

   doubly careful

2. in two ways

   doubly wrong

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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

Though, he adds, "The LEDs are designed by our team so they are pretty unique for those doubly curved, effectively domed displays."

From BBC • Mar. 30, 2026

It was doubly bold, because Seaver was a clean-cut former Marine not given to agitation, and the World Series hadn’t even started.

From The Wall Street Journal • Mar. 27, 2026

Baseball is fleeting, a bit of good-hearted nationalism doubly so.

From Salon • Mar. 18, 2026

Of course she can sing too, but I was doubly impressed that she’s a heck of a physical comedian.

From Los Angeles Times • Mar. 10, 2026

He pulled down his own mask; the long nose and bulging eyes looked doubly monstrous in the fog.

From "Six of Crows" by Leigh Bardugo