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Definitions

sudden

[suhd-n] / ˈsʌd n /
ADJECTIVE
unexpected; happening quickly
Synonyms
STRONGEST
abrupt hasty immediate precipitous quick rapid swift unforeseen unusual
WEAK
accelerated acute expeditious fast flash fleet headlong hurried impetuous impromptu impulsive out of the blue precipitant precipitate quickened rash rushing spasmodic speeded subito
Antonyms
STRONGEST
delayed gradual lazy leisurely slow sluggish
WEAK
expected

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.

She can’t expect a sudden polling Surge™ the more people get to know her, since everyone in the state already knows her well.

From Slate • Apr. 18, 2026

The sudden explosion of online sports betting bespeaks a nation of young men looking for ways to pocket cash for no work.

From The Wall Street Journal • Apr. 17, 2026

Then all of a sudden, we were brilliant.”

From Los Angeles Times • Apr. 17, 2026

"We're absolutely heartbroken to announce that Finnian passed away after a sudden decline in his condition," the statement continued.

From BBC • Apr. 17, 2026

Then there was a tug, a sudden pull at his whole body, and he felt his feet leave the ledge.

From "Impossible Creatures" by Katherine Rundell