To bid or command, as to a thing, that it shall not be done; prohibit by command, or as with authority; issue an order against, as the doing of or being something; interdict: often with a person as indirect object and an act or thing as direct object: as, to forbid the banns (that is, the proclamation of the banns); I forbid you my house (that is, to enter my house).To prohibit the use or action of; put under ban; restrain within limits.To prohibit in effect; stand in the way of; prevent: as, an impassable river forbids the approach of the army.To defy; challenge.To utter a prohibition.