Etymology First use appears c. 1665 in a letter by the Earl of Argyll. From Scottish randy (“boisterous, aggressive”), of uncertain origin. Probably from rand (“to storm, rave”, verb), a variant of rant, see rant; or from rand (“edge”, noun), in the sense of "edgy, on edge", from Middle English rand (“edge, brink, margin, border”), from Old English rand (“edge, border, margin, rim”). Related to randan.
1
UK, Informal Sexually aroused; full of sexual lust.
If you're feeling randy, give me a call and I'll come round and give you some hot lovin'.
Of course, the Greeks were quite the randy bunch themselves. “Anything goes!” was their motto and they lived up to it. It’s amazing that Plato, Aristotle and Socrates got any philosophizing done at all, what with all the lewd and lascivious behavior going on.2005, Annabelle du Fouet, “The murky world from whence it all came” (chapter 2), in Weather Balloons Make Rotten Sex Toys, Ellora's Cave, →ISBN, page 36:
Etymology First use appears c. 1665 in a letter by the Earl of Argyll. From Scottish randy (“boisterous, aggressive”), of uncertain origin. Probably from rand (“to storm, rave”, verb), a variant of rant, see rant; or from rand (“edge”, noun), in the sense of "edgy, on edge", from Middle English rand (“edge, brink, margin, border”), from Old English rand (“edge, border, margin, rim”). Related to randan.