Where does “vouchsafeth” come from?

vouchsafeth (English) comes from English vouchsafe, from English vouch, from Middle English vouchen, from Old French vochier, from Vulgar Latin *vocico, from Latin vocō, from Latin vōx, from Proto-Italic wōks — to speak, to sound out.

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

Definitions

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

Ancestry of “vouchsafeth”, step by step

vouchsafeth traces back through two separate lines of ancestry.

via English vouchsafe

StepLanguageWordMeaning
1EnglishvouchsafeTo graciously give, to condescendingly grant a...
2EnglishvouchTo take responsibility for; to express confidence...
3Middle Englishvouchen
4Old Frenchvochierto call; to summon; to claim; to denounce
5Vulgar Latin*vocico
6Latinvocōto call, summon, beckon (with one's voice)
7Latinvōxvoice
8Proto-Italicwōksvoice
9Proto-Indo-Europeanwṓkʷsvoice, speech
10Proto-Indo-Europeanwekʷ-to speak, to sound out

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Proto-Indo-European wekʷ-Every word from Proto-Indo-European wṓkʷsEvery word from Proto-Italic wōks
vouchsafeth — Etymology, Origin & Word History | Etymology Explorer