imperfect imperfect /ˌɪmˈpɝːfɪkt/

adjective

1. () Not perfect; defective or inadequate  ( imperfect )
   not perfect; defective or inadequate
    Had only an imperfect understanding of his responsibilities
   had only an imperfect understanding of his responsibilities
    Imperfect mortals
   imperfect mortals
    Drainage here is imperfect
   drainage here is imperfect
   
2. () Wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings  ( fallible , frail , imperfect , weak )
   wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings
    I'm only a fallible human
   I'm only a fallible human
    Frail humanity
   frail humanity
   

noun

1. A tense of verbs used in describing action that is on-going  ( continuous tense , imperfect , imperfect tense , progressive , progressive tense )
   a tense of verbs used in describing action that is on-going