'Imperfectibility' definitions:

Definition of 'imperfectibility'

From: WordNet
noun
The capability of becoming imperfect [ant: perfectibility]

Definition of 'Imperfectibility'

From: GCIDE
  • Imperfectibility \Im`per*fec`ti*bil"i*ty\, n. The state or quality of being imperfectible. [R.] [1913 Webster]