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"lustful," mid-15c., Old French libidineus (13c., Modern French libidineux), from Latin libidinosus "full of desire, lustful," from libido "pleasure, desire, sensual passion, lust" (see libido). Related: Libidinously; libidinousness.
libidinous li·bid·i·nous (lĭ-bĭd'n-əs)
Having or exhibiting lustful desires; lascivious.