dont [don't] v

contraction form; see do, v. and not, adv.

  1. Do not; [auxiliary for a negated action].
  2. Doesn't; does not; [colloquial auxiliary for a negated action in the third person.]
  3. Phrase. “dont you know”: do you not know? [negated question for affirmative emphasis] surely you know; certainly you do know.