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English definition of “truly”

truly

adverb (SINCERELY)    /ˈtruː.li/
C1 formal sincerely: Truly, I could not have done this without you. He truly believes he can cure himself by willpower alone.Honesty, openness and sincerity Yours truly formal mainly US used to end a letter: I look forward to hearing from you. Yours truly, Taylor Champinski.Written greetingsLetters, notes and cards
(Definition of truly adverb (SINCERELY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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