duff
🇺🇸
/dʌf/
🇬🇧
/dʌf/
not functioning properly or not genuine
He realized the card was duff and wouldn't work.
그는 카드가 위조품이며 작동하지 않는다는 것을 깨달았습니다.
a person's buttocks
He's been lying on his duff watching TV all weekend.
그는 주말 동안 소파에 누워 텔레비전을 봤습니다.