Top Definition
To be the master of masters, or become the best you can be at something.
Dang, his dance moves are so masterous.
by Halios October 25, 2010
like fucking monster , beast , the superior mother fucker , could also refer to looking fresh
"that guy is dress masterous today"
"i am mighty masterous compared to the 13th graders
by masterous giver October 15, 2008
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