There are 2 definitions of yahoo in English:

yahoo1

Line breaks: yahoo
Pronunciation: /ˈjɑːhuː
 
, jəˈhuː
 
/

noun

informal
A rude, noisy, or violent person.
More example sentences
  • The young people, they have no religion, and the yahoos are coming home to roost.
  • When will the Left learn that this is not simply a nation of dimwitted yahoos?
  • Doesn't this simply reflect that the soccer hooligans and other yahoos have turned it into a symbol of bigotry?
Synonyms
barbarian, philistine, vulgarian, savage, brute, beast, boor, oaf, ruffian, thug, lout, hoodlum, hooligan, vandal, rowdy, bully boy, brawler
informal clod, clodhopper, tough, toughie, roughneck, bruiser, hard man
British informal yobbo, yob, bovver boy, lager lout, chav, oik, ape, gorilla, bear, lump
Scottish informal radge
North American informal lummox
Australian/New Zealand informal hoon

Origin

mid 18th century: from the name of an imaginary race of brutish creatures in Swift's Gulliver's Travels (1726).

Definition of yahoo in:

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Pronunciation: ɪˈpɪlɪən
noun
a narrative poem resembling an epic in style...

There are 2 definitions of yahoo in English:

yahoo2

Line breaks: yahoo
Pronunciation: /jɑːˈhuː
 
, ja-/

exclamation

Expressing great joy or excitement: yahoo—my plan worked!
More example sentences
  • I wish I had a dollar for every time I spent a dollar, because then, yahoo!
  • After months of eating raw fish, facing thirst, sharks, and other terrors, Pi finds himself on an island - yahoo!

Origin

natural exclamation: first recorded in English in the 1970s.

Definition of yahoo in: