Polish nikt

← Czech nikdo (cognate)

← Proto-Indo-European *néy (derived)

← Proto-Indo-European *kʷos (mention)

← Proto-Indo-European *to (mention)

← Polish ni (blend)

← Polish kto (blend)

← Russian никто́ (cognate)

← Slovak nikto (cognate)

← Proto-Slavic *nikъto (inherited)

→ Belarusian ніхто (cognate)

→ Esperanto neni- (derived)