coo

1 of 2

verb

cooed; cooing; coos

intransitive verb

1
: to make the low soft cry of a dove or pigeon or a similar sound
The baby cooed quietly in her crib.
2
: to talk fondly, amorously, or appreciatively
The family cooed over the baby pictures.
coo noun

COO

2 of 2

abbreviation

chief operating officer

Examples of coo in a Sentence

Verb The baby cooed quietly in her crib. The baby was making a cooing sound. They all cooed over the baby pictures. “Oh, how sweet,” she cooed.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
Lilian listened to the pigeons on the roof cooing, in the same manner that their cousins cooed in Belfast or Bruges or Barcelona. Yiyun Li, New Yorker, 15 June 2025 Throughout the hearing Khalil would often look back toward his baby when the newborn cooed. Armando Garcia, ABC News, 22 May 2025 Julian had a blast cradling the cooing birds and imitating the chant-like calls of the pigeon handlers, flapping his arms with glee as their flocks took flight and landed on command. Ashlea Halpern, AFAR Media, 30 Apr. 2025 In toddlers, some of the earliest signs that RSV has infected the lower respiratory system are a diminished interest in eating and decreased vocalizations such as crying, cooing or speaking, says Hill. Daryl Austin, USA Today, 8 May 2025 See All Example Sentences for coo

Word History

Etymology

Verb

imitative

First Known Use

Verb

1577, in the meaning defined at sense 1

Time Traveler
The first known use of coo was in 1577

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Cite this Entry

“Coo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coo. Accessed 18 Jun. 2025.

Kids Definition

coo

verb
1
: to make the low soft cry of a dove or pigeon or a similar sound
2
: to talk fondly or lovingly
coo noun

More from Merriam-Webster on coo

Last Updated: - Updated example sentences
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