dubious ---------- 不可靠的，可疑的（形容词）
英文释义
(adjective) Not likely to be true; uncertain; doubtful.
例句
When asked about the missing cookies, the boy told his mother a dubious story about seeing ghosts who live in the house.
在被问到饼干怎么没有了时，这位男孩给了妈妈一个不靠谱的说法，他说这屋里住着几个鬼。