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Definitions

prerequisite

[pri-rek-wuh-zit, pree-] / prɪˈrɛk wə zɪt, pri- /
ADJECTIVE
necessary
Synonyms
STRONG
essential expedient imperative mandatory requisite
WEAK
called-for important indispensable necessitous needful obligatory of the essence required vital
Antonyms
STRONG
inessential optional secondary unnecessary voluntary
NOUN
condition, necessity
Synonyms
STRONGEST
essential must precondition qualification requirement requisite
STRONG
imperative must-have need postulate
WEAK
sine qua non
Antonyms
STRONGEST
nonessential
WEAK
extra option

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.

Perez-Oliva was also elected to the National Assembly -- a prerequisite to becoming president.

From Barron's • Apr. 7, 2026

Seeing a show is the only prerequisite to submitting, and you might be surprised by the Hollywood star power that shows up.

From Los Angeles Times • Mar. 17, 2026

He said understanding it is a prerequisite for success.

From The Wall Street Journal • Jan. 31, 2026

Today, earning at least six figures has become a prerequisite for most home buyers in the U.S.

From MarketWatch • Jan. 31, 2026

Constant contact with the astronaut during every minute of every orbit was a prerequisite for the flight.

From "Hidden Figures" by Margot Lee Shetterly