Definition of "truly"

truly

/ˈtɹuːli/

adverb
comparative trulier or more truly, superlative truliest or most truly
1. (manner) In accordance with the facts; truthfully, accurately.
  Quotations
  He adds, very truly, that what was fatal to such philosophies as his was not Christianity but the Copernican theory.
  1946, Bertrand Russell, chapter I, in History of Western Philosophy, page 27
2. (modal) Honestly, genuinely, in fact, really.
3. (degree) Very.