Negative consent by not forbidding or hindering; toleration; permission; allowance; leave.

A permission granted by the customs authorities for the shipment of goods.

a disposition to tolerate or accept people or situations; "all people should practice toleration and live together in peace"

A legal concept, the deemed consent to the actions of another person which results when a person who could be expected to react to the other person's actions refuses to do so.

The passive consent given to someone as a result of no action.