dattebayo adjective 1exclamation 1forms 2 adjective1 •(Internet, humorous) Good; nice.not my beautiful sugoi country.... it has been ruined by non dattebayo streamers.... — 2024 exclamation1 •(humorous) An expression of affirmation.I wanna play APEX with neechans too...dattebayo... — 2022 formsmore dattebayo · most dattebayo