Where does “시” come from?

시 (Korean) comes from English cee, from Middle English cee, from Old French sei, from Latin sēdēs, from Latin sedeō, from Proto-Italic sedēō, from Proto-Indo-European sḗd- — to sit.

시 (Korean): honorific suffix applied to verbs and adjectives,...

Definitions

honorific suffix applied to verbs and adjectives,...

Ancestry of “시”, step by step

시 traces back through 3 separate lines of ancestry.

via English cee

Step	Language	Word	Meaning
1	English	cee	The name of the Latin-script letter C; Something...
2	Middle English	cee	Alternative form of see
3	Old French	sei	—
4	Latin	sēdēs	seat, chair
5	Latin	sedeō	to sit, to be seated
6	Proto-Italic	sedēō	sit, be sitting, be seated
7	Proto-Indo-European	sḗd-	to sit

via Middle Korean 시

Step	Language	Word	Meaning
1	Middle Korean	시	valley
2	Old Korean	賜	An honorific suffix for verbs and adjectives indicating that the subject of the sentence or the direct possessor of it is honored; it attaches directly to the stem, preceding all other suffixes

via Chinese 視

Step	Language	Word	Meaning
1	Chinese	視	—

Every word from Proto-Indo-European sḗd- →Every word from Proto-Italic sedēō →Every word from Latin sedeō →