That looks damned snide on the page, but I'm speaking with complete sincerity.
Fortunately, she was able to say this with complete sincerity.
Therefore the individual possessed of the most complete sincerity is like a spirit.
He loved the way she smiled in appreciation and complete sincerity.
"You have a very generous spirit," he said with complete sincerity.
His face, though, was one of complete sincerity, and finally that look subdued her suspicions, at least temporarily.
"Thank you, darling; that was wonderful," I said, with complete sincerity.
"I feel a lot better now that you've come to visit me," I told her, with complete sincerity.
Troy Junior actually asked the question with complete sincerity.
We've had that line dumped on us all too often in complete sincerity.