| 1. | of, pertaining to, or characterized by defects or weaknesses: imperfect vision. |
| 2. | not perfect; lacking completeness: imperfect knowledge. |
| 3. | Grammar. noting action or state still in process at some temporal point of reference, particularly in the past. |
| 4. | Law. being without legal effect or support; unenforceable. |
| 5. | Botany. (of a flower) diclinous. |
| 6. | Music. of or relating to the interval of a major or minor third or sixth. Compare perfect (def. 12a). |
| 7. | the imperfect tense. |
| 8. | another verb formation or construction with imperfect meaning. |
| 9. | a form in the imperfect, as Latin portābam, “I was carrying.” |