Where does “underdelfan” come from?

underdelfan (Old English) comes from Old English delfan, from Proto-West Germanic delban, from Proto-Germanic delbaną, from Proto-Indo-European dʰelbʰ- — to dig, excavate.

underdelfan (Old English): to dig under, undermine, dig out

Definitions

  1. to dig under, undermine, dig out

Ancestry of “underdelfan”, step by step

StepLanguageWordMeaning
1Old Englishdelfanto dig; to dig up, excavate
2Proto-West Germanicdelbanto dig
3Proto-Germanicdelbanąto dig, hollow out
4Proto-Indo-Europeandʰelbʰ-to dig, excavate
Every word from Proto-Indo-European dʰelbʰ- →Every word from Proto-Germanic delbaną →Every word from Proto-West Germanic delban →