Just remember, people might not understand you if you start using these.

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“When I use a word,” Humpty Dumpty said in rather 
a scornful tone, “it means just what I choose it to mean—
neither more nor less.” —Through the Looking Glass

I agree with Mr. Dumpty: Words have meaning. But surely we can seize upon a meaning and then create a word to match it. The following words—some culled from the crowdsourced online dictionary urbandictionary.com and others I’ve concocted myself—don’t exist according to Merriam-Webster … but should. I call them “worderfuls.” Try using these funny words to improve your vocabulary.

A crapella

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(ah kra-‘peh-luh) adj.—Sung (badly) while listening to music using headphones.

Athlethargy

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(ath-‘leh-ther-jee) n.—The triumph of the La-Z-Boy over the StairMaster.