Antonyms of adj apologetic

1 sense of apologetic

Sense 1
apologetic (vs. unapologetic), excusatory -- (offering or expressing apology; "an apologetic note"; "an apologetic manner")

unapologetic (vs. apologetic) -- (unwilling to make or express an apology; "an unapologetic believer")

Similarity of adj apologetic

1 sense of apologetic

Sense 1
apologetic (vs. unapologetic), excusatory -- (offering or expressing apology; "an apologetic note"; "an apologetic manner")
       => defensive, justificative, justificatory -- (attempting to justify or defend in speech or writing)
       => self-deprecating -- (conscious of your own shortcomings)