Forbid (verb)

1. Prohibit or prevent (someone) from doing something.
2. Declare something to be impossible or unlawful.

Origin:

Middle english: from old english forbeodan, of germanic origin; related to dutch verbieden and german verbieten.

Examples:

1. He forbid her to go out.
2. The rule forbids smoking.
3. The law forbids discrimination.
4. The teacher forbid talking during the exam.
5. The doctor forbid him from eating sugar.