Where does “underdig” come from?

underdig (English) comes from English understand, from Middle English understanden, from Old English understandan, from Proto-Germanic understandaną, from Proto-Germanic under, from Proto-Indo-European h₁entér, from Proto-Indo-European h₁en — in; in, inside.

underdig (English): To dig under or beneath; to undermine

Definitions

  1. To dig under or beneath; to undermine

Ancestry of “underdig”, step by step

underdig traces back through two separate lines of ancestry.

via English understand

StepLanguageWordMeaning
1EnglishunderstandTo grasp a concept fully and thoroughly,...
2Middle Englishunderstanden
3Old Englishunderstandanto understand
4Proto-Germanicunderstandanąto stand between, stand in the midst, understand
5Proto-Germanicunderamong, between; under, beneath; under
6Proto-Indo-Europeanh₁entérbetween
7Proto-Indo-Europeanh₁enin; in, inside

via English dig

StepLanguageWordMeaning
1EnglishdigTo move hard-packed earth out of the way,...
2Middle Englishdiggento dig
3Old Englishdīcianto dig a ditch, to mound up earth
4Zazakidîkonshop
5Proto-Germanicdīkazpool, puddle
6Proto-Indo-Europeandʰēygʷ-to stick into, pierce
Every word from Proto-Indo-European h₁en