American English

Definition of sincerely adverb from the Oxford Advanced American Dictionary

  

sincerely

 adverb
adverb
NAmE//sɪnˈsɪrli//
 
 
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  •  in a way that shows what you really feel or think about someone or something I sincerely believe that this is the right decision. “I won't let you down.” “I sincerely hope not.”
  • Idioms
    Sincerely (yours) (also Yours sincerely) (formal)
     
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    used at the end of a formal letter before you sign your name, when you have addressed someone by their name
    See the Oxford Advanced Learner's Dictionary entry: sincerely