Necessitate

Part of speech: verb (v.)

1. To make necessary or indispensable; to render unaviolable. Sickness [might] necessitate his removal from the court. South. This fact necessitates a second line. J. Peile.

2. To reduce to the necessity of; to force; to compel. The Marquis of Newcastle, being pressed on both sides, was necessitated to draw all his army into York. Clarendon.