Etimoloji
Etymology tree Proto-Indo-European *ney Proto-Balto-Slavic *nei Proto-Slavic *ni Polish ni Proto-Indo-European *bʰuH- Proto-Indo-European *bʰúHt Proto-Indo-European *h₁es- Proto-Indo-European *h₁ésti Proto-Balto-Slavic *bū́ˀtei Proto-Slavic *byti Proto-Slavic *by Old Polish by Polish by univ. Polish niby Univerbation of ni + by. First attested in 1579.