Figurative of one who is slow to speak; see “mute” Related DreamsDumb To dream of being dumb, indicates your inability to persuade others into your mode of thinking, and using them for your profit by your glibness of tongue.To the dumb, it denotes false friends.Dumb 1. A need to keep affairs private, keep opinions to oneself. 2. Difﬁculty with emotional expression. 3. Possible arguments in the making—possibly domestic, sometimes social.