restrain

Concise Oxford English Dictionary © 2008 Oxford University Press:
restrain/rɪˈstreɪn/

▶verb

• 1 prevent from doing something; keep within limits.

  ■ deprive of freedom of movement or personal liberty.

• 2 repress (a strong emotion).

– derivatives
restrainable adjective,
restrainer noun,
restraining adjective.

– origin ME: from OFr. restreign-, stem of restreindre, from L. restringere, from re- ‘back’ + stringere ‘to tie’.