look up any word, like trill:
 
1.

1. Unsure about outcome: Not sure about an outcome or conclusion.

2. Possibly dishonest or immoral: Likely to be dishonest, untrustworthy, or morally worrisome in some way.

3. Of uncertain quality: of uncertain quality, intention, or appropriateness.
1. I was a little dubious about whether or not to trust him.
2. It's a dubious proposition.
3. The thesis is based on several dubious assumptions.
by Jafje March 31, 2007
 
2.
Highly questionable, suspicious, and doubtful
"Hey, check out that dubious 40 yr old douche's date. He could be her father!"
by Eggstroidinare March 07, 2010
 
3.
1. used as an adjective to describe a person, place or thing, as well as an idea or event. when something is so bizarre or unexplainable, the word dubious comes to mind first. after someone is stated to be at a loss for words, dubious can best describe what they just encountered
ex 1. Hugh G. Rection: Yo dawg you see that woman actually pass her driving test?!

Jack Mehoff: Yeah man, shit was dubious.

ex 2. This lecture is gettin dubiously outta hand right about now.

ex.3 Joe: You going to Wentworth's party tonight?

Schmoe: You can bet your bottom dollar I am, bout to get dubious.
by Sunny D and the kids table May 22, 2011
 
4.
adj: questionable, doubtful
You require an example of usage? I conisder your intelligence to be dubious.
by Kar December 14, 2004
 
5.
high; getting dubious; a play on the word "doobie"
"I think Nadine and Stephanie are quite dubious."
by CrimsonInk July 23, 2009
 
6.
something good, amazing, or unbelievable. created by AJ Alfaro, this word goes well with damn, or pretty damn in front of it

that was pretty damn dubious
by AJ Alfaro April 16, 2009
 
7.
that something is way better than awesome
that was the most dubious thing ive ever seen
by presidentjerky May 18, 2010