He spoke truthfully.
Truthfully, I didn't suspect a thing.
Truthfully, it is pretty awful.
The word of God is to be freely and truthfully preached by the priests of the Lord, and by worthy deacons.
He claims that the historian's chief duty is to write truthfully, and he is careful to show that a theologian may fulfil this condition.
Truthfully, Gerald wasn't all that good a dancer.
"This is not my day," she said truthfully.