apologetic UK /əˌpɒləˈdʒɛtɪk/US /əˌpɑləˈd͡ʒɛtɪk/adjective 2noun 2forms 3 adjective2 •Having the character of apology; regretfully excusing.His tone was apologetic as he explained what had happened. •(old-fashioned) Defending by words or arguments; said or written in defense. noun2 •A defensive method of argument. •(no longer used) A formal apology. formsapologetics · more apologetic · most apologetic