threw

The story

1. Proto-Germanic · inherited from*þeþrō
2. Old English · inherited fromþrēow
3. Middle English · inherited fromthrew
4. English todaythrew

From Middle English threw, from Old English þrēow (first and third person past tense of þrāwan), from West Germanic *þreu, from Northwest Germanic *þrerō, from Proto-Germanic *þeþrō (first and third person past tense of *þrēaną), reduplication of *þrēaną.