D defs.my
Entry 2 senses Webster, 1913

Necessitate

/nəs-ĕs'-ət-ātˌ/ · Ne·ces·si·tate · IPA /nəˈsɛsəˌteɪt/
01 v. t. To make necessary or indispensable; to render unavoidable.
imp. & p. p. Necessitated; p. pr. & vb. n. Necessitating
  1. 1.
    To make necessary or indispensable; to render unavoidable.
    “Sickness [might] necessitate his removal from the court.” South.
    “This fact necessitates a second line.” — J. Peile.
  2. 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.