Definition

U.S. Army's all-purpose exclamation meaning anything from 'yes' to 'I understand' to 'I'm awake' to 'please stop talking'—the Swiss Army knife of military utterances. Maximum enthusiasm, minimum syllables.

Example Usage

Everyone clear on the mission brief? Hooah!

Origin

Uncertain; possibly from 'HUA' (Heard, Understood, Acknowledged) or Native American war cries, popularized in the 1980s-90s

Fun Fact

Each service branch has its own variant: Marines say 'oorah,' Navy says 'hooyah,' Air Force says 'whatever'—okay, that last one is a joke, but only barely.

Source: U.S. Army culture and informal communications

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