indiscretion
Definitions
Behavior or speech that is indiscreet or displays a lack of good judgment.
A minor misdeed or act that lacks social or moral propriety.
Examples
His minor indiscretion at the party caused quite a stir among the guests.
She apologized for her momentary indiscretion and promised it would not happen again.
The politician's past indiscretion was brought to light by the investigative journalist.