"hairy," 1620s, from Latin hirsutus "rough, shaggy, bristly," figuratively "rude, unpolished," related to hirtus "shaggy," and possibly to horrere "to bristle with fear," from PIE *ghers-tu-, from root *ghers- "to bristle" (see horror).
hirsute hir·sute (hûr'sōōt', hēr'-, hər-sōōt')
adj.
Covered with hair; hairy.
Occasionally used as a humorous synonym for hairy.
[Jargon File]