questionable

/ˈkwestʃənəb(ə)l/📚 6337 18 1六级考研托福
If you say that something is questionable, you mean that it is not completely honest, reasonable, or acceptable. 可疑的; 不合理的; 不能接受的

adjective [原级]可疑的;不确定的,有问题的;可能不诚实(或不道德)的,别有用心的

He has been dogged by allegations of questionable business practices.
他一直被有可疑商业行为的传言困扰着。

questionable

-able ⌜ 能够...的 - capable of being ~ ⌟
question (问题) + able (形容词后缀) → 可疑的
单词造句:
网友用“Questionable”造句精选
His best friend died under questionable circumstances. 他最好的朋友在不明的情况下死了。