Orlog.

As a High German word from Middle High German urliuge, urlouge, urlage (“war”), from a merger of Old High German urliugi and urlag, respectively from Proto-Germanic *uzleugō (“war”) and *uzlagą (“destiny”). The word had become almost obsolete by the 16th century and was then continued only through reinforcement by cognate Middle Low German ōrloch, ōrlōge, ōrlāge. The main form subsequently became Urlog(e), finally Orlog, the latter being likely influenced also by Dutch oorlog. It remained rare in Standard German and gradually lost ground also in Low German, whereas in Dutch it has been the normal word (krijg becoming archaic).