undo

The story

1. Proto-West Germanic · inherited from*andadōn“to undo”
2. Old English · inherited fromondōn
3. Middle English · inherited fromundōn
4. English todayundo

From Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”).

Words from the same roots