Where does “kien” come from?

kien (Esperanto) comes from Esperanto kie, from Esperanto ki-, from French qui, from Middle French qui, from Old French qui, from Latin quī, from Latin -cumque, from Latin cumque — whale, sea monster; abyss.

kien (Esperanto): whither, to where

Definitions

whither, to where

Ancestry of “kien”, step by step

Step	Language	Word	Meaning
1	Esperanto	kie	where
2	Esperanto	ki-	wh-, what
3	French	qui	who, whom; who, whom , which, that; if
4	Middle French	qui	who; which
5	Old French	qui	who
6	Latin	quī	—
7	Latin	-cumque	Used to derive indefinite adjectives, adverbs and...
8	Latin	cumque	however, whenever, howsoever, whensoever
9	Latin	cum	with, along with; at; -fold
10	Old Latin	com	Alternative form of cum
11	Proto-Italic	kom	with, along, at
12	Proto-Indo-European	ḱóm	beside, near, by, with
13	Proto-Indo-European	ḱe	Deictic particle, here; Post-positional...
14	Middle English	kyt	—
15	Russian	кит	whale; genitive plural of ки́та
16	Old Church Slavonic	китъ	whale
17	Ancient Greek	κῆτος	whale, sea monster; abyss

Every word from Ancient Greek κῆτος →

kien — Etymology, Origin & Word History | Etymology Explorer