Hungarian word vki comes from Hungarian ki ((interrogative) who. (relative, archaic, or, formal) who.), Hungarian vala-

Detailed word origin of vki

Dictionary entry	Language	Definition
ki	Hungarian (hun)	(interrogative) who. (relative, archaic, or, formal) who.
vala-	Hungarian (hun)	(pronoun prefix) some- (attached to interrogative pronouns).
valaki	Hungarian (hun)	Somebody, someone; abbreviated as vki.
vki	Hungarian (hun)	Sb, somebody, someone.

Words with the same origin as vki