S: (v) prescribe ((medicine) order the use of (a treatment, medicine, etc.), usually by written prescription) "the doctor prescribed steroids for my ear trouble"
W: (adj) arbitrary [Indirect via nonarbitrary] (based on or subject to individual discretion or preference or sometimes impulse or caprice) "an arbitrary decision"; "the arbitrary rule of a dictator"; "an arbitrary penalty"; "of arbitrary size and shape"; "an arbitrary choice"; "arbitrary division of the group into halves"
S: (adj) appointed, decreed, ordained, prescribed (fixed or established especially by order or command) "at the time appointed (or the appointed time)"