What does "Imperfect" mean?
(a.) Not fulfilling its design; not realizing an ideal; not conformed to a standard or rule; not satisfying the taste or conscience; esthetically or morally defective (a.) Not perfect; not complete in all its parts; wanting a part; deective; deficient (a.) Wanting in some elementary organ that is essential to successful or normal activity (n.) The imperfect tense; or the form of a verb denoting the imperfect tense (v. t.) To make imperfect
Example: "Had only an imperfect understanding of his responsibilities"