Bedeutung von “sincerely” im Essential American English Dictionary

sincerely

adverb us /sɪnˈsɪər·li/

in a sincere way:

I sincerely hope that this never happens again.
Yours sincerely formal

used at the end of formal letters where you know the name of the person you are writing to

Sincerely (yours) formal

B1 used at the end of formal letters

(Definition von “sincerely” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)