恳切[kěn qiè]
词典sincere：真诚的，诚挚的；〈古〉纯粹的，不掺假的；真心实意的；真实的。
词典earnest：热心的；诚挚的，真挚的；重要的。
earnest; sincere:
例：恳切陈词
make a statement earnestly;
恳切希望
earnestly [sincerely] hope;
言词恳切
speak in an earnest tone;
恳切邀请大家出席。
The public is cordially invited.