Then I should have asked you to accept my pledge of fidelity and to give me yours.
I had some trouble in finding an attendant for her, as it was necessary to select one on whose fidelity dependence could be placed; for her ravings would inevitably betray my secret: besides, she had lucid intervals of days — sometimes weeks — which she filled up with abuse of me.
I have a woman’s heart, but not where you are concerned; for you I have only a comrade’s constancy; a fellow-soldier’s frankness, fidelity, fraternity, if you like; a neophyte’s respect and submission to his hierophant: nothing more — don’t fear."
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