permit

Make it possible through a specific action or lack of action for something to happen.

“This permits the water to rush in”

“This will permit the rain to run off”

Allow the presence of or allow (an activity) without opposing or prohibiting.

“Children are not permitted beyond this point”

Consent to, give permission.

“She permitted her son to visit her estranged husband”

The act of giving a formal (usually written) authorization.

Large game fish; found in waters of the West Indies.

A legal document giving official permission to do something.