누

Etymology 1
Korean reading of various Chinese characters.

Etymology
It has been suggested since the 1950s that the basic Korean pronouns, , and (> modern ) were all formed from the same etymon via ablaut, which appears to have once been an extremely productive process in Korean, at some very ancient stage. Given the very limited data on prehistoric Korean, this hypothesis cannot be proven for sure either way.

Pronoun

 * 1)  who?

Usage notes
In Middle Korean, the pronoun only had an interrogative sense and did not mean "somebody" as in Modern Korean. The word for "somebody" was > Modern.

Inflection
The Middle Korean pronouns have an irregular pitch inflection otherwise unusual in the language, and the origin of which is unknown.