require

Concise Oxford English Dictionary © 2008 Oxford University Press:
require/rɪˈkwʌɪə(r)/

▶verb

• 1 need or depend on.

  ■ wish to have.

• 2 instruct or expect (someone) to do something.

  ■ (require something of) regard an action or quality as due from.

  ■ specify as compulsory: the minimum car insurance required by law.

– derivatives
requirer noun.

– origin ME: from OFr. requere, from L. requirere, from re- (expressing intensive force) + quaerere ‘seek’.