The supreme awesomeness achieved when a Splendifer (a tiny, rainbow and sparkly dinosaur that feeds off of awesomeness) has taken residence in your left nostril.
Friend one- "I hope you are splendiferous during your audition today!"

Friend two- "That Splendifer has enough awesomeness to live off of for months, but thanks anyway."
by The Splediferous Splendifer November 11, 2010
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Splendiferous can be used in many different contexts. During sexual contact, when someone asks you how your day is going, or when you climax alone or with someone. It is also a good word to use when Harry Potter role playing. Sounds like your casting a spell.
Person A: How are you doing?
Person B: Splendiferous!

Person A: aUg I’m cumming!!!
Person B: Splendiferous

Person A: Your magonagussy is splendiferous!!!
by The one and only megonagussy February 7, 2023
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An adjective used to describe a person who is splendid, magnificent, and carnivorous. Usually only used for a select few.
by Pepe21 December 22, 2008
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The way I feel at the Reitz Union at UF.
Justin: "I feel so splendiferous!"

Karl: "Shut the fuck up Justin."

Justin: "Ok, but only because I'm feeling so splendiferous."
by Yettie Bear October 11, 2010
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To be splendidly happy as though you cannot be happier.
by Dakman August 27, 2005
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The act of being so much gayer than gay itself.
Dude 1: Yo bro i was chillin with my boys last night!
Dude 2: How positively splendiferous!
by ur cousins left ballsack February 12, 2012
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