mongrel

The story

1. Proto-Germanic · derived from*mang-“mix; mixture”
2. Old English · derived fromġemang“mingling”
3. Middle English · inherited frommongrel
4. English todaymongrel

From Middle English mongrel, equivalent to mong (“mixture”) + -rel (pejorative diminutive); from Old English ġemang (“mingling”) (whence Modern English among), from Proto-Germanic *mang- (“mix; mixture”).