Antonyms of adj flawless

1 sense of flawless

Sense 1
flawless, unflawed -- (without a flaw; "a flawless gemstone")

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 flawless

1 sense of flawless

Sense 1
flawless, unflawed -- (without a flaw; "a flawless gemstone")
       => 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")