Butt-naked

adj, slang

Definitions

Adjective
  1. 1
    Stark naked, completely nude. Canada, US, informal, not-comparable

    "They could hardly have all marched off butt-naked."

Etymology

Probably related to (and perhaps simply a variant of) buck naked. It is not clear which of the two forms came first, but the earliest written evidence suggests that buck naked is present some four decades earlier.

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