oorlog.

From Middle Dutch orloge, from Old Dutch *urlage. In this word, two Germanic words merged, both having the prefix ur- (modern Dutch oor- and oer-, with the former kept in compounds like oorzaak (“cause, driver”) and oorsprong (“origin”), and the latter borrowed from German). The first word was derived from Proto-Germanic *uzlagą (“fate, destiny”), with *laga- related to modern Dutch leggen (“to lay”). The second word was derived from Proto-Germanic *uzleugō (“war”), with *leugō meaning “oath” (see also Gothic 𐌻𐌹𐌿𐌲𐌰 (liuga) and Old Irish lugae). Cognate to Old Saxon orlagi, Middle Low German ōrloch (Low German and German Orlog), Old High German urliugi and urlag, Old Frisian orloch, West Frisian oarloch, Old English orlæg, Old Norse ørlög and ørlygi.