Top Definition
ADJ: Full of rainbows, the epitome of rainbows, of/related to/making one think of rainbows.

(NOTE, this is so totally a word. This is the most real word on the planet. Mister Webster himself used this word.)
Jane: "There is this girl at my school with cool hair. It has many colors - it is so RAINBOWFUL!!"

Dick: "That's cool.. are you a lesbian?"

- - - -

Martha: "Look at that evil little bunny!"

Stewart: "LOOK OUT! It's so rainbowful! I'm blinded!"

Le bunny: * blows Martha and Stewart to pieces *
by Fluffy Princess Anon December 12, 2012
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