Incapable of accomplishment; not to be practised, performed, carried out, or effected by the means at command.Incapable of being used; unfit for the purpose intended or desired; unserviceable; unavailable; of persons, unmanageable; untractable.Synonyms Impossible, Impracticable. See impossible. 1 and 2. Impracticable, Unpractical. The meanings of the two words approach each other at two points, but still are clearly distinct: Of a thing: impracticable, not possible to be done without expense or sacrifice greater than is advisable; unpractical, not dictated by or in harmony with the lessons of experience in actual work: as, an unpractical plan.Of a person: impracticable, not easily managed; unpractical, not showing that sort of wisdom which is the result of experience in affairs.n. One who is unmanageable, unreasonable, or stubborn.