Where does “gaspeth” come from?

gaspeth (English) comes from English gasp, from Middle English gaspen, from Old Norse geispa — to yawn.

Ancestry of “gaspeth”, step by step

gaspeth traces back through two separate lines of ancestry.

via English gasp

StepLanguageWordMeaning
1EnglishgaspTo draw in the breath suddenly, as if from a...
2Middle Englishgaspento gape, exhale
3Old Norsegeispato yawn

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Old Norse geispaEvery word from Middle English gaspenEvery word from English gasp