Treason in the executive branch of the government was estopped.
Before attorning, you may do so; after that you are estopped.
In rebuking inconstancy she was out of court; she was estopped, as the lawyers call it.
In this event the third person is said to be estopped from the right to sue the undisclosed principal.
Are third persons ever estopped from denying a corporation's ...