YAHOO

PRONUNCIATION:
(noun: YAH-hoo, interjection: ya-HOO)

MEANING:
noun: A person who is boorish, loud, disruptive, etc.
interjection: Expressing excitement, delight, or triumph.

ETYMOLOGY:
For noun: After Yahoos, a race of brutish creatures in Jonathan Swift’s Gulliver’s Travels. Earliest documented use: 1751.
For interjection: Apparently of echoic origin. Earliest documented use: 1976.
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YUHOO - a call to attract someone's attention

YAPOO - French baby-talk meaning "No More!" (short for il n'y a plus)

YAHOOK - what ya throw at yahoop when yalayup isn't working