Where does “do” come from?
do (Middle English) comes from Old English dā, from Proto-Germanic *daihā, from Proto-Indo-European dʰeh₁(y)- — to suckle, nurse.
Ancestry of “do”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old English | dā | doe; female deer |
| 2 | Proto-Germanic | *daihā | — |
| 3 | Proto-Indo-European | dʰeh₁(y)- | to suckle, nurse |