Kenneth G. Wilson (1923). The Columbia Guide to Standard American English. 1993.
prescribe, proscribe (vv.)
Prescribe means to set down a rule, to dictate, direct, or order, and, in a specialized medical sense, to order a treatment or medicine for a patient, as in The doctor prescribed aspirin and rest. Proscribe means to banish, to sentence to death, to outlaw, and, in its generalized sense, to forbid a behavior, as in The judge firmly proscribed his driving a car.