Tuvan бөгүн

← Southern Altai бӱгӱн (cognate)

← Khakas пӱӱн (cognate)

← Kazakh бүгін (cognate)

← Yakut бүгүн (cognate)

← Turkish bugün (cognate)

← Proto-Turkic *bu-gün (inherited)

← Tuvan бо (compound)

← Tuvan хүн (compound)

→ Southern Altai бӱгӱн (cognate)

→ Yakut бүгүн (cognate)

→ Tuvan бөгүнгү (suffix)