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Synonyms

promise

American  
[prom-is] / ˈprɒm ɪs /

noun

  1. a declaration that something will or will not be done, given, etc., by one.

    unkept political promises.

  2. an express assurance on which expectation is to be based.

    promises that an enemy will not win.

    Synonyms:
    pledge, word
  3. something that has the effect of an express assurance; indication of what may be expected.

  4. indication of future excellence or achievement.

    a writer who shows promise.

  5. something that is promised.


verb (used with object)

promised, promising
  1. to engage or undertake by promise (usually used with an infinitive or a clause as object).

    She promised to go tomorrow.

    Synonyms:
    agree, covenant, pledge
  2. to make a promise of (some specified act, gift, etc.).

    to promise help.

  3. to make a promise of something to (a specified person).

    Promise me that you will come.

  4. to afford ground for expecting.

    The sky promised a storm.

  5. to engage to join in marriage.

  6. to assure (used in emphatic declarations).

    I won't go there again, I promise you that!

verb (used without object)

promised, promising
  1. to afford ground for expectation (often followed by well orfair ).

    His forthcoming novel promises well.

  2. to make a promise.

promise British  
/ ˈprɒmɪs /

verb

  1. to give an assurance of (something to someone); undertake (to do something) in the future

    I promise that I will come

  2. (tr) to undertake to give (something to someone)

    he promised me a car for my birthday

  3. (when tr, takes an infinitive) to cause one to expect that in the future one is likely (to be or do something)

    she promises to be a fine soprano

  4. (usually passive) to engage to be married; betroth

    I'm promised to Bill

  5. (tr) to assure (someone) of the authenticity or inevitability of something (often in the parenthetic phrase I promise you, used to emphasize a statement)

    there'll be trouble, I promise you

"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

noun

  1. an undertaking or assurance given by one person to another agreeing or guaranteeing to do or give something, or not to do or give something, in the future

  2. indication of forthcoming excellence or goodness

    a writer showing considerable promise

  3. the thing of which an assurance is given

"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
promise Idioms  

Other Word Forms

  • outpromise verb (used with object)
  • overpromise verb (used with object)
  • prepromise noun
  • promisable adjective
  • promiseful adjective
  • promiser noun
  • quasi-promised adjective
  • repromise verb
  • unpromised adjective

Etymology

Origin of promise

First recorded in 1375–1425; (noun) late Middle English promis(se), from Medieval Latin prōmissa, from Latin prōmissum, noun use of neuter past participle of prōmittere “to promise,” literally, “to send forth,” equivalent to prō- pro- 1 + mittere “to send”; (verb) late Middle English promisen, derivative of the noun

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 White House said the threat of tariffs had already spurred pharmaceutical firms to promise $400bn investments in the US.

From BBC • Apr. 2, 2026

The center-left finance minister offers reforms that have real promise for spurring economic growth.

From The Wall Street Journal • Apr. 2, 2026

“IUL policies promise returns tied to stock market indices without direct market exposure,” it adds.

From MarketWatch • Apr. 1, 2026

His lawyers contend they seek to correct a 160-year misunderstanding about the Constitution’s promise that “all persons born” in this country are deemed to be citizens.

From Los Angeles Times • Apr. 1, 2026

I heard Zara promise to represent me and accept my medal if I didn’t get back in time.

From "Red Flags and Butterflies" by Sheryl Azzam