Old Korean 毛冬

← Middle Korean ᄃᆞ (cognate)

← Middle Korean -을〮 (cognate)

← Old Korean 不冬 (cognate)

← Proto-Korean (mention)

← Proto-Korean (mention)

← Proto-Korean (mention)

→ Korean 모르다 (cognate)

→ Korean 못 (inherited)

→ Old Korean 不冬 (cognate)