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Synonyms

require

American  
[ri-kwahyuhr] / rɪˈkwaɪər /

verb (used with object)

requires, present (3rd person singular) required, past participle, past requiring present participle
  1. to have need of; need.

    He requires medical care.

  2. to call on authoritatively; order or enjoin to do something.

    to require an agent to account for money spent.

  3. to ask for authoritatively or imperatively; demand.

    Antonyms:
    forgo
  4. to impose need or occasion for; make necessary or indispensable.

    The work required infinite patience.

  5. to call for or exact as obligatory; ordain.

    The law requires annual income-tax returns.

  6. to place under an obligation or necessity.

    The situation requires me to take immediate action.

    Synonyms:
    necessitate, obligate
  7. Chiefly British. to desire; wish to have.

    Will you require tea at four o'clock?


verb (used without object)

requires, present (3rd person singular) required, past participle, past requiring present participle
  1. to demand; impose obligation.

    to do as the law requires.

require British  
/ rɪˈkwaɪə /

verb

  1. to have need of; depend upon; want

  2. to impose as a necessity; make necessary

    this work requires precision

  3. (also intr) to make formal request (for); insist upon or demand, esp as an obligation

  4. to call upon or oblige (a person) authoritatively; order or command

    to require someone to account for his actions

"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

Usage

What are other ways to say require? To require something is to have a need for it or to ask for it authoritatively. How does require compare to synonyms want, need, and lack? Find out on Thesaurus.com. 

Synonym Usage

See demand.

Other Word Forms

Derived Forms

Etymology

Origin of require

First recorded in 1300–50; Middle English requiren, from Latin requīrere, equivalent to re- re- ( def. ) + -quīrere, combining form of quaerere “to seek, search for”; cf. quest ( def. )

Explanation

Require means to need. You require food, water, and shelter to live, but do you really require that new pair of high-fashion shoes? The verb require comes from Latin root words re-, meaning "repeatedly," and quaerere, meaning "to ask." The word lost the sense of asking and came to mean needing, demanding, or insisting upon something. The law requires that you attend school until you're sixteen; your parents probably require you to finish high school. If you're a waiter in a fancy restaurant and the food has been served, you might ask if your customers require anything else.

Keep Reading on Vocabulary.com

Vocabulary lists containing require

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.

Getting one does require you to get in touch with your supplier and provide some evidence - but that does not take very long.

From BBC • Jun. 14, 2026

This will involve journals that require verification, hiring and tenure arrangements that reward exposition and checking, and collaborative practices for the verification of proofs.

From The Wall Street Journal • Jun. 14, 2026

If not treated, the child can experience a progressive paralysis that can lead to breathing difficulties and require weeks of hospitalization.

From Los Angeles Times • Jun. 14, 2026

The IRS says you must be a current employee but doesn’t require a minimum number of hours worked External link.

From Barron's • Jun. 13, 2026

A thriller that might require the light to be left on overnight.

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin

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