懞

méng:* 厚道朴实："敦～纯固，以备祸乱。" * 古同"蒙"，遮盖。 měng:* 古同"懵"，心乱，一时无知

(translated) honest and simple; anciently same as "蒙", meaning "to cover"; anciently same as "懵", meaning "confused, momentary ignorance"