Miss Pross’s fidelity of belief in Solomon (deducting a mere trifle for this slight mistake) was quite a serious matter with Mr. Lorry, and had its weight in his good opinion of her.
He was not improved in habits, or in looks, or in manner; but there was a certain rugged air of fidelity about him, which was new to the observation of Charles Darnay.
The peril of an old servant and a good one, whose only crime was fidelity to himself and his family, stared him so reproachfully in the face, that, as he walked to and fro in the Temple considering what to do, he almost hid his face from the passersby.
He occupied rooms in the Bank, in his fidelity to the House of which he had grown to be a part, like strong root-ivy.
There are no more uses of "fidelity" in the book.
Show samples from other sources
But it was only decent, and now I was a cheater, and I couldn’t ruin my record of fidelity on something merely average.
Gillian Flynn -- Gone Girl
That opening is scientifically and mathematically positioned by a factory-trained technician to enhance the TT AB-700’s true high-fidelity sound!"
Christopher Paul Curtis -- The Watsons Go to Birmingham—1963