sincerely

Universal Words adverb in a way that shows what you really feel or think about sb/sth: I sincerely believe that this is the right decision. * 'I won't let you down.' 'I sincerely hope not.' IDIOMS Yours sincerely (BrE) (AmE Sincerely )yours() (formal, written) used at the end of a formal letter before you sign your name, when you have addressed sb by their name