1540s, from Latin dubiosus "doubtful," from dubium "doubt," neuter of dubius "vacillating, moving two ways, fluctuating;" figuratively "wavering in opinion, doubting, doubtful," from duo "two" (see two), with a sense of "of two minds, undecided between two things." Old English also used tweo "two" to mean "doubt." Compare doubt (v.). Related: Dubiously; dubiousness.
实用例句
1. They would now find some dubious pretext to restart the war.
他们现在会找个蹩脚的借口重新发动战争。
来自柯林斯例句
2. Soho was still a highly dubious area.
索霍区仍然是个靠不住的地方。
来自柯林斯例句
3. I was rather dubious about the whole idea.
我对这整个想法持怀疑态度。
来自《权威词典》
4. The tests have been shown to be of dubious validity.
