Imperfect

1. Not perfect; not complete in all its parts; wanting a part; deective; deficient.
2. The imperfect tense; or the form of a verb denoting the imperfect tense.
3. 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.
4. Wanting in some elementary organ that is essential to successful or normal activity.
5. To make imperfect.