insincerely
🇺🇸
/ˌɪnsɪnˈsɪrli/
🇬🇧
/ˌɪnsɪnˈsɪəli/
not genuine or honest in what you say or do
He apologized insincerely for being late to the meeting.
他对迟到会议不真诚地道歉。