Where does “underlieth” come from?

underlieth (English) comes from English underlie, from Middle English underlien, from Old English underliċġan — to underlie, to be subject to, give way to.

underlieth (English): Third-person singular simple present indicative...

Definitions

  1. Third-person singular simple present indicative...

Ancestry of “underlieth”, step by step

underlieth traces back through two separate lines of ancestry.

via English underlie

StepLanguageWordMeaning
1EnglishunderlieTo lie in a position directly beneath; To lie...
2Middle Englishunderlien
3Old Englishunderliċġanto underlie, to be subject to, give way to

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Old English underliċġan