used to emphasize that what you are saying is true, even though it may seem surprising:
I honestly don't know how old my parents are.
I can honestly say that I never worry about him now.
used when you are shocked or annoyed by something someone has said or done [= really]:
Honestly! Do you ever listen?
used to try to make someone believe that what you have just said is true:
It wasn't me, honestly!
in an honest way [= truthfully]:
Tell me honestly, Kate, what do you think of John?
We talked openly and honestly.
'No, I don't,' she answered honestly.