yahoo

ya|hoo¹ [ya:ˈhu:] interjection spoken informal

[Date: 1900-2000; Origin: From the sound of a happy shout]

shouted when you are very happy or excited about something

yahoo ²

yahoo² plural yahoos

n

[Date: 1700-1800; Origin: From the name of a race of human-like animals in Jonathan Swift's Gulliver's Travels (1726)]

old-fashioned someone who is rough, noisy, or rude

▪ a bunch of time-wasting yahoos