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See more synonyms for coo on Thesaurus.com
verb (used without object), cooed, coo·ing.
  1. to utter or imitate the soft, murmuring sound characteristic of doves.
  2. to murmur or talk fondly or amorously.
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verb (used with object), cooed, coo·ing.
  1. to utter by cooing.
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  1. a cooing sound.
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Origin of coo

First recorded in 1660–70; imitative
Related formscoo·er, nouncoo·ing·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for cooing

murmur, sound, utter, woo

Examples from the Web for cooing

Contemporary Examples of cooing

Historical Examples of cooing

  • By degrees her voice had lost its cooing tone and had risen to a shriek.

  • "Yes, you're mighty nice and cooing when you got me where you want me," he jeered.

    Alice Adams

    Booth Tarkington

  • And so their life had hitherto been a game of love, an everlasting billing and cooing.


    Emile Zola

  • He was cooing and blowing at little Katherine over the fringe of her towels.

    The Manxman

    Hall Caine

  • "That is the cooing of wood-pigeons or doves," said Mr. Fairchild.

    The Fairchild Family

    Mary Martha Sherwood

British Dictionary definitions for cooing


verb coos, cooing or cooed
  1. (intr) (of doves, pigeons, etc) to make a characteristic soft throaty call
  2. (tr) to speak in a soft murmur
  3. (intr) to murmur lovingly (esp in the phrase bill and coo)
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  1. the sound of cooing
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  1. British slang an exclamation of surprise, awe, etc
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Derived Formscooer, nouncooingly, adverb


abbreviation for
  1. cost of ownership
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abbreviation for
  1. chief operating officer
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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

Word Origin and History for cooing



1660s, echoic of doves; the phrase to bill and coo is first recorded 1816. Related: Cooing. The noun is recorded from 1729.

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Online Etymology Dictionary, © 2010 Douglas Harper