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moo

American  
[moo] / mu /

verb (used without object)

  • moos,
    present (3rd person singular)
  • mooed,
    past participle,  past
  • mooing
    present participle
  1. to utter the characteristic deep sound of a cow; low.


noun

  • moos
    plural
  1. a mooing sound.

moo British  
/ muː /

verb

  1. (intr) (of a cow, bull, etc) to make a characteristic deep long sound; low

"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

interjection

  1. an instance or imitation of this sound

"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

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future


Etymology

Origin of moo

First recorded in 1540–50; imitative


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.

See Examples For:

A distant moo came from beyond a hill.

From The Wall Street Journal ● Jul. 2, 2026

With the afternoon sun beating down while the cows snort and moo, the workers inspect and clean the animals' teats, which are then attached to milking equipment.

From BBC ● Feb. 19, 2026

In addition to a “HYEWEST” vanity plate and longhorns on the front, there was a button inside that would make the car moo.

From Los Angeles Times ● Mar. 18, 2025

“They moo a lot and poop a bit, but other than that, they’re pretty good workers,” Yancey says.

From Seattle Times ● Aug. 18, 2023

It let out a long moo, making the barn shake simply by shifting its stance.

From "Fablehaven" by Brandon Mull

Now in previews at the St. James Theater, where it opens on July 10, this “Into the Woods” presents Milky White as a puppet who breathes, coughs, moos and mourns — which works enchantingly.

From New York Times ● Jun. 29, 2022

A few steps away, thousands of Holstein cows looked on, their moos audible over the industrial whir of the manure separator.

From Los Angeles Times ● Apr. 9, 2020

Last week, the Los Angeles-based singer-songwriter-rapper posted a short clip on Twitter and Instagram in which she dances in a cow costume and quite literally moos over some swelling harmonies and jazz guitar.

From Slate ● Aug. 15, 2018

For example: Betty White: “It moos and makes milk.”

From Time ● Sep. 14, 2016

Their excited moos echoed out from the barn and across the farm.

From "The Wild Robot Escapes" by Peter Brown

Events keep drifting like a lost motorist who starts out on the interstate and takes a series of wrong turns until he’s on a one-lane dirt road, getting mooed at.

From The Wall Street Journal ● Aug. 13, 2026

From above the clouds, we hiked Trail 104 into a valley where cowbells echoed in an incredible cowbell concert that seemed to crescendo each time one of the cows mooed.

From Washington Post ● Apr. 29, 2022

Cooper said the cows ultimately "ended up wandering back home. And I kid you not, one cow mooed — then the other cows mooed."

From Fox News ● Mar. 3, 2022

So, perhaps regularly eating meat that's never mooed, oinked, or encountered a farm may be a logical next step?

From BBC ● Oct. 31, 2021

Sophie mooed, which sparked Butter mooing, and Caleb had never quite stopped crying his dog song.

From "Gone Crazy in Alabama" by Rita Williams-Garcia

The town is so off the beaten track, the loudest sound is cows mooing in the distance.

From Seattle Times ● May 25, 2024

They were docile animals, thanks perhaps to the cow DNA, which also explains the mooing and the subtle patchy fur patterns.

From Slate ● Jan. 28, 2023

Residents in Glasgow housing estates could soon be hearing the sound of mooing cows and clucking hens outside their homes.

From BBC ● Dec. 8, 2022

A pilot program with more monitoring is now the industry standard, with electronic tags on every mooing export’s ear to track deaths and slaughterhouse practices.

From New York Times ● Nov. 30, 2022

Squawking and mooing and laughing and cheering filled the barn.

From "The Wild Robot Escapes" by Peter Brown

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