[adj] offering or expressing apology; "an apologetic note"; "an apologetic manner"
contrite, defensive, excusatory, justificative, justificatory, self-deprecating
unapologetic
abject, apologia, ascetic, atoning, cleansing, compensational, compensatory, compunctious, conscience-stricken, contrite, defense, excusatory, excusing, expiatory, extenuating, extenuative, humble, humbled, justification, justificatory, justifying, lustra