Yes
来自Big Physics
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Old English gēse, gīse, probably from an unrecorded phrase meaning ‘may it be so’.
wiktionary
From Middle English yes, from Old English ġīese. Compare yea.
etymonline
yes (adv.)
Old English gise, gese "so be it!," probably from gea, ge "so" (see yea) + si "be it!," from Proto-Germanic *sijai-, from PIE *si-, optative stem of root *es- "to be." Originally stronger than simple yea. Used in Shakespeare mainly as an answer to negative questions. As a noun from 1712. Yes-man is first recorded 1912, American English.
