Proto-Turkic *bil-

→ Azerbaijani bilmək (inherited)

→ Azerbaijani bəlli (cognate)

→ Bashkir белеү (inherited)

→ Bulgarian белег (cognate)

→ Dolgan бил (inherited)

→ Kazakh білу (inherited)

→ Kumyk билмек (inherited)

→ Old Turkic 𐰋𐰃𐰠 (inherited)

→ Old Uyghur pylmʾk (inherited)

→ Turkmen bilmek (inherited)

→ Turkish bilmek (inherited)

→ Tuvan билир (inherited)

→ Karakhanid بِلْماكْ (inherited)

→ Karakhanid بِلْكا (mention)