Constrain

v. t.
  1. To secure by bonds; to chain; to bond or confine; to hold tightly; to constringe.
  2. To bring into a narrow compass; to compress.
  3. To hold back by force; to restrain; to repress.
  4. To compel; to force; to necessitate; to oblige.
  5. To violate; to ravish.
  6. To produce in such a manner as to give an unnatural effect; as, a constrained voice.