truly

adverb3

1. •
   really and honestly, used to show that you mean what you are saying

   • That is truly all I know.
   • Truly, that is all I know.
2. •
   Very.

   • You are truly silly.
3. •
   In accordance with the facts; truthfully, accurately.

   • He adds, very truly, that what was fatal to such philosophies as his was not Christianity but the Copernican theory. — 1946