An Etymological Dictionary of the German Language/harren

by Friedrich Kluge

harren, vb., ‘to wait, linger in expectation, delay,’ from MidHG. harren, ‘to wait, sojourn’; a MidG. word, entirely unknown to OHG. as well as the other Teut. dialects, but undoubtedly a genuine Teut. term; of obscure origin (allied, like Gr. καρτερεῖν, to hart?; comp. Lat. durare, akin to durus).