The story
- Old English · inherited fromon ōþre wīsan
- Middle English · inherited fromotherwise
- English todayotherwise
From Middle English otherwise, othre wise, from Old English on ōþre wīsan (literally “in (on) other/different manner”); equivalent to other + -wise. Compare West Frisian yn oarwei (“otherwise”), Icelandic öðruvísi (“different”).
Etymology from Wiktionary, CC BY-SA 4.0.