دس

دَسَّاسٌ دساس That enters much, or often; wont to enter; syn. دَخَّالٌ: so in the saying, العِرْقُ دَسَّاسٌ [ The natural disposition is wont to enter and actuate him in whom it is engendered: generally applied to him who has some fault derived from his mother, or the like; as is said in a marginal note in my copy of the TA: see عِرْقٌ]. (TA.)