Defn: Want of power; weakness. [Obs.] Piers Plowman.

UNPOWERFUL
Un*pow"er*ful, a.

Defn: Not powerful; weak. Cowley.

UNPRACTICABLE
Un*prac"ti*ca*ble, a.

Defn: Impracticable; not feasible.

UNPRACTICAL
Un*prac"ti*cal, a.

Defn: Not practical; impractical. "Unpractical questions." H. James.
I like him none the less for being unpractical. Lowell.

UNPRAISE
Un*praise", v. t. Etym: [1st pref. un- + praise.]

Defn: To withhold praise from; to deprive of praise. [R.]

UNPRAY
Un*pray, v. t. Etym: [1st pref. un- + pray.]