Defn: Want of proficiency. [R.] Bacon.
IMPROFITABLE Im*prof"it*a*ble, a. Etym: [Pref. im- not + profitable: cf. F. improfitable.]
Defn: Unprofitable. [Obs.]
IMPROGRESSIVE
Im`pro*gress"ive, a.
Defn: Not progressive. De Quincey.
— Im"pro*gress"ive*ly, adv.
IMPROLIFIC Im`pro*lif"ic, a. Etym: [Pref. im- not + prolific: cf. F. improlifique.]
Defn: Not prolific. [Obs.] E. Waterhouse.
IMPROLIFICATE
Im`pro*lif"ic*ate, v. t. Etym: [Pref. im- in + prolificate.]
Defn: To impregnate. [Obs.] Sir T. Browne.
IMPROMPT
Im*prompt", a.