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Synonyms

constrain

American  
[kuhn-streyn] / kənˈstreɪn /

verb (used with object)

  1. to force, compel, or oblige.

    He was constrained to admit the offense.

    Synonyms:
    coerce
  2. to confine forcibly, as by bonds.

    Synonyms:
    bind, check
    Antonyms:
    free
  3. to repress or restrain.

    Cold weather constrained the plant's growth.


constrain British  
/ kənˈstreɪn /

verb

  1. to compel or force, esp by persuasion, circumstances, etc; oblige

  2. to restrain by or as if by force; confine

"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

Other Word Forms

  • constrainable adjective
  • constrainer noun
  • constrainingly adverb
  • nonconstraining adjective
  • unconstrainable adjective
  • unconstraining adjective

Etymology

Origin of constrain

1275–1325; Middle English constrei ( g ) nen < Anglo-French, Middle French constrei ( g ) n- (stem of constreindre ) < Latin constringere. See con-, strain 1

Explanation

To constrain is to hold back, restrain, or confine. If you've ever had to constrain a toddler in the middle of a temper tantrum, you know you have to watch out for flailing limbs. The verb constrain comes from the Latin word constringere, which means to bind together or tie tightly. Constrain can imply both literal and figurative bindings. You can constrain someone by physically holding on to something like a person's shirt. Or, you can figuratively constrain someone by putting up obstacles. Your teenagers, for example, may feel constrained by your rules and accuse you of sucking the fun out of their social lives.

Keep Reading on Vocabulary.com

Vocabulary lists containing constrain

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.

The recent attacks in the Persian Gulf could further constrain supplies of industrial metals.

From The Wall Street Journal • Apr. 2, 2026

Doing so demands coordinated action by the international community to constrain the East Asian supply chains feeding their production.

From Barron's • Mar. 17, 2026

The First Amendment and decades of precedent constrain executive agencies.

From Salon • Mar. 17, 2026

Presidents have a freer hand to craft policy on the global stage, with lawmakers and courts less empowered to constrain them.

From Slate • Mar. 10, 2026

For the Arguments to induce belief, though of sufficient certainty, yet do not so constrain the mind to give its assent, but there is prudence and choice in it.

From "The Invention of Science" by David Wootton