First Known Use: 15th century
Dictionary
1boo
interjection \ˈbü\
Definition of BOO
—used to express contempt or disapproval or to startle or frighten
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See boo defined for kids
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Origin of BOO
Middle English bo
Rhymes with BOO
blue, brew, chew, clew, clue, coo, coup, crew, cue, dew, do, doux, due, ewe, few, flu, flue, fou, glue, gnu, goo, hew, hue, Jew, Koo, lieu, loo, mew, moo, moue, mu, new, nu, ooh, pew, phew, pooh, q, queue, roux, rue, screw, shoe, shoo, shrew, Sioux, skew, slew, slough, slue, smew, sou, sous, spew, sprue, stew, strew, sue, Sue, thew, through, to, too, true, two, u, view, whew, who, woo, xu, yew, you, zoo
2boo
noun
: a sound that people make to show they do not like or approve of someone or something
: any sound at all
plural boos
Full Definition of BOO
1
: a shout of disapproval or contempt
2
: any utterance at all —usually used in negative constructions <never said boo>
See boo defined for English-language learners
First Known Use of BOO
1801
3boo
verb
: to show dislike or disapproval of someone or something by shouting “Boo” slowly
Full Definition of BOO
intransitive verb
: to deride especially by uttering a prolonged boo
transitive verb
: to express disapproval of by booing <the crowd booed the referee>
See boo defined for English-language learners
First Known Use of BOO
1884
BOO[1] Defined for Kids
1boo
interjection \ˈbü\
Definition of BOO for Kids
—used to express disapproval or to startle or frighten
2boo
noun
plural boos
Definition of BOO for Kids
: a cry expressing disapproval
3boo
verb
booedboo·ing
Definition of BOO for Kids
: to express disapproval of with boos
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