unauthorized
01
未经授权的, 无权的
not endowed with authority
02
未经授权的, 非法的
not officially permitted or approved by a recognized authority
例子
The transaction was declined because it was made with an unauthorized credit card.
交易被拒绝，因为是用未经授权的信用卡进行的。
词汇树
unauthorized
authorized
authorize
authority
