An Etymological Dictionary of the German Language/Annotated/harren

by Friedrich Kluge

harren, verb, ‘to wait, linger in expectation, delay,’ from Middle High German harren, ‘to wait, sojourn’; a Middle German word, entirely unknown to Old High German as well as the other Teutonic dialects, but undoubtedly a genuine Teutonic term; of obscure origin (allied, like Greek καρτερεῖν, to hart?; compare Latin durare, akin to durus).