“The heroine's honour is unjustly impugned, but her alleged crime is such a peccadillo that the emotions associated with it seem ludicrously overblown.”
“The politician's peccadillo, although considered a minor wrongdoing, caused public outrage and damaged his reputation.”
“I'm making the biggest decision of my life and you reduce it to a mere peccadillo.”
peccability
The state or quality of being peccable; liability to sin.