Manx moo

← Proto-Celtic *māyos (inherited)

← Proto-Celtic *māros (mention)

← Welsh mwy (cognate)

← Irish mó (cognate)

← Scottish Gaelic mò (cognate)

← Proto-Indo-European *meh₁- (derived)

← Old Irish móu (inherited)

← Old Irish móo (mention)

→ Scottish Gaelic umpa (cognate)

→ Manx smoo (compound)