Antonyms of adj deferential

1 sense of deferential

Sense 1
deferent, deferential, regardful -- (showing deference)

INDIRECT (VIA respectful) -> disrespectful -- (exhibiting lack of respect; rude and discourteous; "remarks disrespectful of the law"; "disrespectful in the presence of his parents"; "disrespectful toward his teacher")

Similarity of adj deferential

1 sense of deferential

Sense 1
deferent, deferential, regardful -- (showing deference)
       => respectful (vs. disrespectful) -- (full of or exhibiting respect; "respectful behavior"; "a respectful glance")