Un*pow"er (?), n. Want of power; weakness. [Obs.] Piers Plowman.
Un*pow"er*ful (?), a. Not powerful; weak. Cowley.
Un*prac"ti*ca*ble (?), a. Impracticable; not feasible.
Un*prac"ti*cal (?), a. Not practical; impractical. "Unpractical
questions." H. James.