/'dju:bɪəs; [US] 'du:-; `dubɪəs/
adj
1 [esp pred 尤作表语] ~ (about sth/doing sth) not certain and slightly suspicious about sth; doubtful 半信半疑; 可疑
*I remain dubious about her motives. 我对她的动机仍存疑念.
2 (derog 贬) possibly or probably dishonest, disreputable or risky 不大可靠的; 名声不大好的; 冒风险的
*a rather dubious character 名声不太好的人
* a dubious business venture 冒险的商业投机
* His background is a trifle dubious, to say the least. 起码可以说, 他的背景不大可靠.
3 uncertain in result; in doubt 结果未定的; 不能确定的
*The results of this policy will remain dubious for some time. 这项政策的效果短期内难以确定.
4 (esp ironic 尤作反语) of which the value is doubtful; questionable 价值可疑的; 有问题的; 有争议的
*a dubious compliment, ie a disguised insult 明褒实贬的恭维
* She had the dubious honour of being the last woman to be hanged in England. 她是英国最後一个受绞刑的女子, 这也算是有此殊荣吧.

adj
[Date: 1500-1600; Language: Latin;Origin: dubius, from dubare 'to be unable to decide']
probably not honest, true, right etc
　The firm was accused of dubious accounting practices.
　Many critics regard this argument as dubious or, at best, misleading.
　The assumption that growth in one country benefits the whole world is highly dubious .
[not before noun]
not sure whether something is good or true
= doubtful
　I can see you are dubious; take some time to think about it.
dubious about
　Some universities are dubious about accepting students over the age of 30.
　'Are you sure you know what you are doing?' Andy said, looking dubious .
the dubious honour/distinction/pleasure (of doing sth)
a dubious honour etc is the opposite of an honour - used about something unpleasant that happens
　The Stephensons had the dubious honor of being the 100th family to lose their home in the fire.
not good or not of good quality
　The room was decorated in dubious taste.
>dubiouslyadv
>dubiousnessn[U]