boo

1 of 4

interjection

used to express contempt or disapproval or to startle or frighten

boo

2 of 4

noun (1)

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

boo

3 of 4

verb

booed; booing; boos

intransitive verb

: to deride especially by uttering a prolonged boo

transitive verb

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

boo

4 of 4

noun (2)

plural boos
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

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
Highlights include a costume parade (for kids and parents), a Purim story and boo Haman and songs. Linda McIntosh, San Diego Union-Tribune, 15 Mar. 2024 Volunteer yourself to help with X, Y and Z accommodations if that lightens the family’s workload, without saying boo about the couple’s choices. Carolyn Hax, Washington Post, 18 Jan. 2024 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
Noun
That led to some boos from the home crowd at the end of the second period as the Blues retreated to the locker room. Curtis Pashelka, The Mercury News, 31 Mar. 2024 The most annoying downside is that the last-gen Superlight relies on Micro USB for charging (boo), whereas the new model opts for a saner USB-C connector. Brandon Widder, The Verge, 27 Mar. 2024 Biden’s supporters tried to drown out the protester with boos, while the President tried to keep the peace. Benjamin Wallace-Wells, The New Yorker, 17 Mar. 2024 The silence at least gave the crowd space to bellyache and boo. Alphonse Pierre, Pitchfork, 8 Mar. 2024 But at the Wednesday night school board meeting, he was greeted with boos and chants from angry parents, teachers, and community members in the school district made of up of two elementary schools and one middle school. Jenavieve Hatch, Sacramento Bee, 15 Feb. 2024 Malik Monk added 23 points and 10 assists off the bench as the Kings heard boos from their fans throughout the game. Ben Ross, USA TODAY, 8 Feb. 2024 After a third warning, Mr. Rey left the ring to a chorus of boos. James Wagner Luis Antonio Rojas, New York Times, 1 Feb. 2024 There were definitely some not-Swifties in the crowd; boos rang out in San Jose when the camera cut to the superstar, watching the game with friends in a luxury box. Harriet Blair Rowan, The Mercury News, 12 Feb. 2024
Verb
As the crowd reacted to the mention of the pop superstar by booing, Wallen was quick to shut down their negativity. Sadie Bell, Peoplemag, 8 Apr. 2024 The forum begins Rittenhouse took center stage soon after 7 p.m. — with hundreds of protesters booing outside the venue. The Courier-Journal, 27 Mar. 2024 When the camera cut to Greene booing Biden and calling him a liar, Moore looked unimpressed. Journal Sentinel, 11 Mar. 2024 Halfway through the video, a second person appears on the stage and escorts Swardson to the wings, as the crowd boos. Alexandra Del Rosario, Los Angeles Times, 5 Mar. 2024 Angels owner Arte Moreno was emphatically booed Friday night when his image ever-so-briefly appeared on the Angel Stadium screen during a highlights video before the team’s home opener against the Boston Red Sox. Chuck Schilken, Los Angeles Times, 8 Apr. 2024 Commissioner Werfel opened his speech at American University with a video clip from the Simpsons, in which Homer is heard loudly booing the IRS. Scott Horsley, NPR, 24 Mar. 2024 Mark Consuelos lit the Live audience's fuse during a hilariously shady round of the fan-favorite Stump Mark trivia game with a firefighter, after the in-studio crowd turned on the actor and booed him on the air. Joey Nolfi, EW.com, 6 Mar. 2024 And even got booed off the stage at a competition — for winning! Michael Schneider, Variety, 14 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'boo.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Interjection

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

Noun (1)

derivative of boo entry 1

Verb

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.

First Known Use

Interjection

1639, in the meaning defined above

Noun (1)

1884, in the meaning defined at sense 1

Verb

1833, in the meaning defined at intransitive sense

Noun (2)

1988, in the meaning defined above

Time Traveler
The first known use of boo was in 1639

Dictionary Entries Near boo

Cite this Entry

“Boo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boo. Accessed 24 Apr. 2024.

Kids Definition

boo

1 of 2 interjection
used to express contempt or disapproval or to startle or frighten

boo

2 of 2 noun
plural boos
1
: a shout of disapproval or contempt
2
: any sound at all
never said boo
boo verb

More from Merriam-Webster on boo

Last Updated: - Updated example sentences
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