randy

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.

Origin: Middle English