imperfect
ETYM Latin imperfectus: pref. im- not + perfectus perfect: cf. F imparfait, whence Old Eng. imparfit. Related to Perfect.
Not perfect; defective or inadequate.
imperceptibly · imperceptive · impercipience · imperest fund · imperf · imperfect · imperfect competition · imperfect fungi · imperfect fungus · imperfectibility