unbothered
un both ered |ˌənˈbäT͟Hərd ˌənˈbɑðərd | ▶adjective showing or feeling a lack of concern about or interest in something: she was unbothered by the mess in the sink.
un |bothered |ʌnˈbɒðəd | ▶adjective lacking concern about something: she was unbothered by the mess in the sink.