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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.

Framework Convention on Climate Change, a treaty aimed at stabilizing greenhouse-gas concentrations and requiring member states to submit annual inventories of their emissions.

From The Wall Street Journal

“Many have said they’d like to learn, but once they try it and realize how much time, patience and practice it requires ... they just can’t keep it up.”

From Los Angeles Times

Although disclaiming any such intent, the federal court here required a “historical twin” — that is, previous legislation that banned open carry.

From Los Angeles Times

As robots take their usual spotlight at the annual CES gadget fest, insiders caution that making them truly like humans will take several more years and require lots of training.

From Barron's

The fund requires such high dividend yields that it has 0% in tech, but double-digit-size holdings in utilities, healthcare, energy, financial services, and consumer defensive stocks.

From Barron's