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1.
a cool word used to describe how great something is.
tony- wow madeline thats awesome
madeline-- ahh tony marvelous!
by anthony james September 17, 2005
 
2.
1. (adjective) describes something cool, unique, or otherwise worthy of marvel.

2. (noun) the highest accuracy value assigned in Konami's game, Dance Dance Revolution. Better than "Perfect", only appears in special modes. Plural = Marvelouses, or Marvelous
1. "Are you sure I look okay in this leather miniskirt?"
"You look marvelous, woman! Get in the car!"

2. "I saw this kid with an apeshit Legend Road score-- like 200 Perfects and the rest Marvelous!"
by second tuesday October 19, 2006
 
3.
1. Kodama
2. Causing wonder or astonishment.
Kodama is marvelous.
by William April 24, 2004