Steve tells Catherine he wants to plead manslaughter on grounds of temporary insanity, but she looks dubious about the idea.
The little priest rose with a distinctly dubious grimace.
In the absence of corroboration, these dubious details must be received with extreme reserve.
Time-honoured custom had hitherto reckoned primogeniture in the male line as the best 'title to the Russian crown; in the ustav of 1722 Peter denounced primogeniture in general as a stupid, dangerous, and even unscriptural practice of dubious origin.
Nor have they even had the dubious merit of success.