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Definitions

like mad

ADJECTIVE
fast
Synonyms
STRONGEST
agile brisk hot nimble quick rapid swift
STRONG
accelerated active dashing electric flashing fleet fleeting flying hurried racing ready snap split-second winged
WEAK
PDQ blue streak breakneck double-time expeditious expeditive hairtrigger hasty hypersonic in a jiffy in nothing flat lickety split like a bat out of hell like all get out like crazy on the double posthaste presto pronto screamin' snappy speedball supersonic velocious
Antonyms
STRONGEST
clumsy slow
STRONG
dull
WEAK
plodding tardy unhurried
ADJECTIVE
madly
Synonyms
STRONGEST
crazily desperately energetically excitedly foolishly frantically furiously hastily hysterically intensely passionately recklessly tumultuously violently
STRONG
dementedly insanely
WEAK
absurdly deliriously devotedly distractedly exceedingly excessively extremely frenziedly hard hurriedly irrationally ludicrously nonsensically psychotically quickly rabidly rapidly rashly senselessly something fierce speedily stormily to distraction turbulently unreasonably
Antonyms
WEAK
calmly normally
ADJECTIVE
swift
Synonyms
STRONGEST
abrupt expeditious hasty nimble quick rapid speedy sudden unexpected
STRONG
cracking express fleet flying precipitate prompt ready screaming short spanking
WEAK
alacritous barrelling breakneck double-quick fleet-footed headlong hurried in nothing flat like crazy on the double pronto shaking a leg short-lived snappy speedball supersonic winged
Antonyms
STRONGEST
delayed expected lazy leisurely slow
WEAK
sluggish
ADVERB
desperately
Synonyms
STRONGEST
badly dangerously fiercely greatly perilously seriously
WEAK
carelessly dramatically gravely harmfully hysterically like crazy
Antonyms
STRONGEST
mildly
WEAK
calmly easily trivially

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.

Rangers ran around like mad dogs in a meathouse and got a draw having just conceded six to Brugge.

From BBC • Nov. 1, 2025

“I love you, I’ll miss you like mad and I’m sorry for the inconvenience x,” the 35-year-old balladeer wrote in the post’s caption.

From Los Angeles Times • Feb. 28, 2024

Mahomes celebrated winning by sprinting like mad into the end zone.

From Seattle Times • Feb. 11, 2024

They really are out there coming up with the dishes on the fly, running around the kitchen like mad and the sweat you see is real.

From Salon • May 12, 2023

I could feel her heart thumping like mad as she realized it was her own husband and her own mother lying there.

From "Walk Two Moons" by Sharon Creech

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.