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Synonyms

madly

American  
[mad-lee] / ˈmæd li /

adverb

  1. insanely or wildly.

    The old witch cackled madly.

  2. with desperate haste or intensity; furiously.

    They worked madly to repair the bridge.

  3. foolishly.

    They lived madly, wasting all their money.

  4. extremely.

    They're madly in love.
madly British  
/ ˈmædlɪ /

adverb

  1. in an insane or foolish manner

  2. with great speed and energy

  3. informal extremely or excessively

    I love you madly
"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

Etymology

Origin of madly

A Middle English word dating back to 1175–1225; mad, -ly

Explanation

To do something madly is to do it in a frenzied or crazy way. If you oversleep, you might throw your clothes on and run madly out the door to catch your bus. If your sister has a demented, angry expression on her face, you could say that her eyes are glowing madly. If your brother is rushing around the house, trying to hastily clean it up before your parents get home, you might say that he's madly throwing things in the garbage. Madly sometimes also means "intensely" or "excessively." In Shakespeare's famous play, Romeo and Juliet love each other madly.

Keep Reading on Vocabulary.com

Vocabulary lists containing madly

"The Necklace" and "The Fashion Show"

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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.

Nobody would ever give a damn about Cats in Hats or Green Eggs and Ham, and the world wouldn't have a golden goose - the madly magnificent Dr. Seuss.

From BBC • Mar. 2, 2026

When they get their money, they run madly for the exits, bowling over anyone in their path, and they squeal away in their cars, leaving tire tracks on the road.

From Slate • Nov. 15, 2025

Investors seem to be madly saying, “What, me worry?”

From The Wall Street Journal • Nov. 2, 2025

Neeson told the magazine, “with Pamela, first off, I’m madly in love with her,” before detailing her work ethic and sense of humor.

From Los Angeles Times • Jul. 30, 2025

“I’ll tell you later,” I whisper, and my heart starts hammering madly in my chest.

From "The Running Dream" by Wendelin Van Draanen

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.