umbethink

The story

1. Old English · inherited fromymbeþencan
2. Middle English · inherited fromumbethenken
3. English todayumbethink

From Middle English umbethenken, from Old English ymbeþencan, ymbþencan (“to think about, consider, deliberate”), from ymb- (“around”) + þencan (“to think”), equivalent to um- + bethink or umbe- + think.