Antonyms of adj perfectible

1 sense of perfectible

Sense 1
perfectible -- (capable of becoming or being made perfect)

INDIRECT (VIA perfect) -> imperfect -- (not perfect; defective or inadequate; "had only an imperfect understanding of his responsibilities"; "imperfect mortals"; "drainage here is imperfect")

Similarity of adj perfectible

1 sense of perfectible

Sense 1
perfectible -- (capable of becoming or being made perfect)
       => perfect (vs. imperfect) -- (being complete of its kind and without defect or blemish; "a perfect circle"; "a perfect reproduction"; "perfect happiness"; "perfect manners"; "a perfect specimen"; "a perfect day")