Where does “lengtheneth” come from?

lengtheneth (English) comes from English lengthen, from English -en, from Middle English -en, from Old English -en, from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz, from Proto-Indo-European -iHnos — adjectival suffix.

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

Definitions

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

Ancestry of “lengtheneth”, step by step

lengtheneth traces back through two separate lines of ancestry.

via English lengthen

StepLanguageWordMeaning
1EnglishlengthenTo make longer, to extend the length of; To...
2English-enDenotes the past participle form when attached to...
3Middle English-enDenotes the past participle form when attached to...
4Old English-enmæġþ + API → mæġden; cocc + API → cycen, cicen;...
5Old Norse-innUsed to create adjectives from nouns, meaning...
6Proto-Norse-īna-
7Proto-Germanic-īnaz-en
8Proto-Indo-European-iHnosCreates adjectives of materials
9Proto-Indo-European-no-adjectival suffix

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Proto-Indo-European -no-Every word from Middle English -enEvery word from English -en