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Synonyms

require

American  
[ri-kwahyuhr] / rɪˈkwaɪər /

verb (used with object)

required, requiring
  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)

required, requiring
  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. 

Related Words

See demand.

Other Word Forms

  • nonrequirable adjective
  • prerequire verb (used with object)
  • quasi-required adjective
  • requirable adjective
  • requirer noun
  • unrequired adjective

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”; quest ( def. )

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.

As a major net exporter of silver, China’s 121 million ounces of annual production now requires government permission.

From MarketWatch

That requires data storage and the ability to deliver AI on secure networks through ethernet or optical networking.

From Barron's

Recovering small amounts of minerals from complex ore mixtures requires advanced technology, additional processing steps, and supportive policies.

From Science Daily

Air-superiority missions, for instance, would require them to sortie and remain “on station” in Taiwan’s vicinity for a time before returning, which isn’t viable from Guam, Heginbotham said.

From The Wall Street Journal

The product tested is expected to be available in parts of Europe next year, while the path to approval in the U.S. will require another clinical trial.

From The Wall Street Journal