gleek

From Middle French glic, from Old French glic (“a game of cards”), of Germanic origin from or related to Middle High German glücke, gelücke (“luck”) and Middle Dutch gelīc (“like, alike”). More at luck, like.

Related to Etymology 1. Of North Germanic origin, from Old Norse *gleikr, leikr (“sport, play, game”), from Proto-Germanic *galaikaz (“jump, play”), from Proto-Indo-European *leyg-. Cognate with Old English ġelācan (“to play a trick on, delude”), Scots glaik (“a glance of the eye, deception, trick”, n.), Scots glaik (“to trick, trifle with”, v.). More at lake.

Blend of glee +‎ geek.