다른 사람을 속이거나 기만하는 사람.
A person who deceives, tricks, or cheats others.
예문:
"The online duper was eventually caught after scamming dozens of victims."
"She realized too late that the charming salesman was a professional duper."
터무니없이 크거나 굉장한.
Extremely large, impressive, or great.
예문:
"He bought a duper sized television that took up the entire living room wall."
"The party was a duper success, with everyone talking about it for weeks."