\ ˈbü How to pronounce boo (audio) \

Definition of boo

 (Entry 1 of 4)

used to express contempt or disapproval or to startle or frighten


noun (1)
plural boos

Definition of boo (Entry 2 of 4)

1 : a shout of disapproval or contempt
2 : any utterance at all usually used in negative constructions never said boo


booed; booing; boos

Definition of boo (Entry 3 of 4)

intransitive verb

: to deride especially by uttering a prolonged boo

transitive verb

: to express disapproval of by booing the crowd booed the referee


noun (2)
plural boos

Definition of boo (Entry 4 of 4)

US slang
: a romantic partner : sweetheart, honey Your parents might keep a sharp eye on potential partners and your besties may lay down difficult "friend tests," but only one real opinion on your new boo truly matters: what your dog thinks of them.— Jaime Lees This has left me skeptical of all new relationships—including my new boo.— Griffin Wynne

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Synonyms & Antonyms for boo

Synonyms: Noun (1)

Antonyms: Noun (1)

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Examples of boo in a Sentence

Noun (1) A chorus of boos was heard after the shot missed the goal. The announcement was greeted by a mixture of boos and cheers. Verb Many people in the crowd booed when the announcement was made. Many people in the crowd booed the announcement, but a few people cheered it.
Recent Examples on the Web: Interjection C’mon, when the day began the Dodgers were in third place in the standings, but led the league in pitching and led all of baseball in run differential and … boo! Bill Plaschke, latimes.com, 25 May 2017 Recent Examples on the Web: Noun Aside from reprising the iconic peek-a-boo lingerie look, Lipa showed us that she's been having a blast exploring the great outdoors with a gallery showing off Ireland's gorgeous countryside. Abby Dupes, Seventeen, 25 Apr. 2022 His pitch — wide and short of the plate — drew a boo or two from the fans in the stands. Brett Dawson, The Courier-Journal, 22 Apr. 2022 The Reveal and Conceal Play peek-a-boo by pairing an unbuttoned blouse with your favorite swim top. Vogue, 12 Apr. 2022 And Australian label Peony sells a green gingham sundress with a peek-a-boo cutout at the midsection. Lauren Mechling, WSJ, 23 Mar. 2022 Coral Pink Sand Dunes is just a minutes-drive away, not to mention Red Canyon, or Peek-a-boo Slot, and Gooseberry Mesa. Kristin Scharkey, Sunset Magazine, 4 Mar. 2022 Here are a few of our favorite services for Valentine's—all of which deliver on a monthly basis, so your boo (or you) can extend the love for months. Malia Griggs, SELF, 18 Jan. 2022 Though filled with wacky detours, nothing will stop her mission to meet up with her Buffalo Soldier-boo in Kansas. oregonlive, 23 Mar. 2022 Head to one of Urbana Cafe’s locations and buy your boo a latte or pour over. Paul Daugherty, The Enquirer, 17 Feb. 2022 Recent Examples on the Web: Verb In other words, the teams didn’t give their fan bases anything to boo about. New York Times, 29 Apr. 2022 After the comment was made, attendees in the chambers began to boo and groan at the comment, as Biden paused for a brief moment and continued his address. Jordan Mendoza, USA TODAY, 2 Mar. 2022 As the building began to buzz, driven by Duke fans who stuck around to boo MSU and root on Davidson, Bingham checked back in. Chris Solari, Detroit Free Press, 19 Mar. 2022 Introduced to the Madison Square Garden crowd by Kris Kristofferson, O’Connor would soon be comforted by him when the crowd — or at least a vocal portion of it — tried to boo her offstage. Sheri Linden, The Hollywood Reporter, 25 Jan. 2022 Mets players, led by former Cub Javier Báez, became the first athletes to boo their fans, using a thumbs-down gesture to show their displeasure. Paul Sullivan, chicagotribune.com, 26 Dec. 2021 Knicks fans would love another chance to boo Young in the teams' first meeting at MSG since last season's playoffs, when Young emerged as a New York villain and the Hawks eliminated the Knicks in the opening round. Matt Eppers, USA TODAY, 25 Dec. 2021 The entire team spent the week rushing to clear Ball's name, fearing that the audience might boo her during the show's Friday night live taping. Maureen Lee Lenker, EW.com, 21 Dec. 2021 Fans, for the most part, have stopped going to the games and the ones that do go, seem to boo or wear a paper bag on their head. Matt Young, Chron, 5 Dec. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'boo.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of boo


1639, in the meaning defined above

Noun (1)

1884, in the meaning defined at sense 1


1833, in the meaning defined at intransitive sense

Noun (2)

1988, in the meaning defined above

History and Etymology for boo


expressive formation; the voiced labial release and high vowel presumably heighten the suddenness of the utterance

Noun (1)

derivative of boo entry 1


derivative of boo entry 2

Noun (2)

of uncertain origin

Note: Perhaps ultimately a hypocoristic reduction of brother, applied to unrelated males, but the details are unclear.

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Cite this Entry

“Boo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boo. Accessed 26 May. 2022.

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More Definitions for boo


\ ˈbü How to pronounce boo (audio) \

Kids Definition of boo

 (Entry 1 of 3)

used to express disapproval or to startle or frighten


plural boos

Kids Definition of boo (Entry 2 of 3)

: a cry expressing disapproval


booed; booing

Kids Definition of boo (Entry 3 of 3)

: to express disapproval of with boos

More from Merriam-Webster on boo

Nglish: Translation of boo for Spanish Speakers

Britannica English: Translation of boo for Arabic Speakers


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