Where does “後妻” come from?

後妻 (Japanese) comes from Japanese 上, from Old Japanese うえ, from Proto-Japonic upay, from Sanskrit उपाय, from Sanskrit उप-, from Proto-Indo-Aryan upa-, from Proto-Indo-Iranian upa-, from Proto-Indo-European upo — under, up from under; up from under, over; up,...

後妻 (Japanese): one's second wife; envy, jealousy; used...

Definitions

one's second wife; envy, jealousy; used...

Ancestry of “後妻”, step by step

後妻 traces back through 3 separate lines of ancestry.

via Japanese 上

Step	Language	Word	Meaning
1	Japanese	上	the above; the top; the surface of
2	Old Japanese	うえ	—
3	Proto-Japonic	upay	above, over
4	Sanskrit	उपाय	.
5	Sanskrit	उप-	towards; near, with; under, below
6	Proto-Indo-Aryan	upa-	—
7	Proto-Indo-Iranian	upa-	towards
8	Proto-Indo-European	upo	under, up from under; up from under, over; up,...

via Japanese 後

Step	Language	Word	Meaning
1	Japanese	後	the back, the rear, behind; later, afterwards,...
2	Japanese	跡	a track or trace; evidence of something moving,...
3	Japanese	足	foot; 脚 leg
4	Old Japanese	足	—

via Japanese 女

Step	Language	Word	Meaning
1	Japanese	女	a woman; a wife; a mistress, concubine
2	Middle Chinese	女	—

Words derived from “後妻”

Every word from Proto-Indo-European upo →Every word from Sanskrit उप- →Every word from Sanskrit उपाय →