Irish bun

← Proto-Celtic *bonus (inherited)

← Welsh bôn (cognate)

← Old Irish bun (inherited)

→ Irish bunaigh (suffix)

→ Irish bunú (affix)

→ Irish bun- (mention)

→ Irish bunúil (affix)

→ Irish bunaonad (affix)

→ Irish bunscoil (prefix)

→ Irish bunoscionn (compound)

→ Irish buntús (compound)