A PIE interrogative-indefinite paradigm built from the stems *kʷi- and *kʷe- (parallel to anaphoric Lua error in Module:links at line 217: The specified language Proto-Indo-European is unattested, while the given term does not begin with '*' to indicate that it is reconstructed.), the former on nom. and acc. cases of all genders, the latter elsewhere, with no distinction of feminine forms, mostly "human" - "non-human". A stem *kʷo-, o-stem adjective, with its corresponding feminine *kʷeh₂-, was originally separate, but in most languages there was some conflation with the other two, as it is from this function that the relative pronoun evolves. Often compared with Proto-Uralic *ku- ~ *ko-.
Old Armenian: ի-(i-), հի-(hi-), ո(o), ով(ov), որ(or), քան(kʻan)
Proto-Balto-Slavic: *kas, *ki (see there for further descendants)
Proto-Celtic: *kʷēs (from *kʷís), *kʷid (from *kʷíd) (see there for further descendants)
Lua error in Module:etymology/templates/descendant at line 287: You specified a term in 4= and not one in 3=. You probably meant to use t= to specify a gloss instead. If you intended to specify two terms, put the second term in 3=.
Lua error in Module:etymology/templates/descendant at line 287: You specified a term in 4= and not one in 3=. You probably meant to use t= to specify a gloss instead. If you intended to specify two terms, put the second term in 3=., कः(káḥ), किः(kíḥ, “who?”)
Kurdish: kî ("who"), Lua error in Module:parameters at line 290: Parameter 1 should be a valid language or etymology language code; the value "ku" is not valid. See WT:LOL and WT:LOL/E. ("whom"), Lua error in Module:parameters at line 290: Parameter 1 should be a valid language or etymology language code; the value "ku" is not valid. See WT:LOL and WT:LOL/E. ("what"), Lua error in Module:parameters at line 290: Parameter 1 should be a valid language or etymology language code; the value "ku" is not valid. See WT:LOL and WT:LOL/E. ("which")