남의 눈에 띄지 않게 비밀리에 또는 은밀하게 행동하는 방식.
In a way that is not openly acknowledged or displayed; secretly or stealthily.
예문:
"The investigator covertly followed the suspect through the crowded market to avoid detection."
"She covertly checked her watch during the long meeting, hoping it would end soon."
"The software was designed to covertly collect user data without their explicit consent."