Antonyms of adj down_pat

1 sense of down pat

Sense 1
down, down pat (predicate), mastered -- (understood perfectly; "had his algebra problems down")

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 down_pat

1 sense of down pat

Sense 1
down, down pat (predicate), mastered -- (understood perfectly; "had his algebra problems down")
       => 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")