sincerelyon Band 3also onBasic words (BNC)? CEFR Advanced (C1)? باخلاص,بصدق,بِحُسْنِ نِيَّة,عَنْ حُسْنِ نِيَّة sincerely sincerely(adverb) باخلاص,بصدق,بِحُسْنِ نِيَّة,عَنْ حُسْنِ نِيَّة yours sincerely yours sincerely(expression) مع خالص تقديري Forms adverbexpression sincerely yours sincerely