Where does “assureth” come from?

assureth (English) comes from English assure, from Old French asseürer, from Vulgar Latin *assēcūrāre, from Latin ad-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en — in.

assureth (English): third-person singular simple present indicative...

Definitions

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

Ancestry of “assureth”, step by step

assureth traces back through two separate lines of ancestry.

via English assure

StepLanguageWordMeaning
1EnglishassureTo make sure and secure; ensure
2Old FrenchasseürerAlternative form of asseurer
3Vulgar Latin*assēcūrāre
4Latinad-to; usually prefixed to verbs, in which cases it...
5Latinīn-un-, non-, not
6Latinînin, at, on, upon, from (space)
7Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
8Proto-Italicenin
9Proto-Indo-Europeanh₁énin

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Latin ad-