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Definitions

like crazy

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 mad on the double posthaste presto pronto screamin' snappy speedball supersonic velocious
Antonyms
STRONGEST
clumsy slow
STRONG
dull
WEAK
plodding tardy unhurried
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 mad 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 mad
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.

See: Stocks are swinging like crazy while the S&P 500 goes nowhere in 2026.

From MarketWatch • Mar. 27, 2026

At the Home Office, he said he found "a total bin fire" but "worked like crazy to try and fix that".

From BBC • Jan. 16, 2026

So, we will live to 120 and spend like crazy.

From Barron's • Jan. 9, 2026

“If you’re seeing, like, crazy horror stories online don’t assume that that’s going to happen to you,” she said.

From The Wall Street Journal • Oct. 19, 2025

“You’d fight like crazy too, if you were in his place.”

From "The Reader" by Traci Chee

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