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"
affected by a disorder of the mind; "a mental patient"; "mental illness"
involving the mind or an intellectual process; "mental images of happy times"; "mental calculations"; "in a terrible mental state"; "mental suffering"; "free from mental defects"
of or relating to the chin- or liplike structure in insects and certain mollusks
of or relating to the mind; "mental powers"; "mental development"; "mental hygiene"
capable of or tending to change in form or quality or nature; "a mutable substance"; "the mutable ways of fortune"; "mutable weather patterns"; "a mutable foreign policy"
sanctioned by or consistent with or operating under a constitution; "the constitutional right of free speech"; "constitutional government"; "constitutional guarantees"
of benefit to or intended to benefit your physical makeup; "constitutional walk"
of or relating to a constitution; "constitutional amendments"