His mother was dubious that he had already cleaned his room.
He lost the debate because his argument was made up of dubious "facts."
It is doubtful that this sentence will really answer your question, but it is a good start!
(dubious means of uncertain truth or validity)Examples :The validity of the document was somewhat dubious.I was rather dubious about the reasons he gave for his absence.
the look on his face was dubious
The lady was very dubious of the children's allegations.
After her best friend had lied three times, Alice was dubious of her story
The plan to separate the world into nations was quite dubious. Definition is here: http://www.merriam-webster.com/dictionary/dubious
Now a comprehensive European blacklist of airlines with dubious safety standards will soon be in force across the EU.
He dubiously marked down the answer on his test.Dubiously is the adverb form of dubious. Dubious means doubtful and unsure. Just add an "ly" and it turns dubious into an adverb. An adverb simply describes a verb. Your verb in this sentence is "marked." "Dubiously describes how he "marked" his answer.
The Pokemon that uses the Dubious disk is Porygon2 to evolve him into a porygon-Z
no say The child asked he's mom a question dubiously
Yes, dubious is an adjective > (Of questionable character: dubious profits.)
I was dubious of driving with Jonny because he just recently got his license.
A Dubious Legacy was created in 1992.