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Meaning of hilarious

hi•lar•i•ous

Pronunciation: (hi-lâr'ē-us, -lar'-, hī-), [key]
— adj.
  1. arousing great merriment; extremely funny: a hilarious story; a hilarious old movie.
  2. boisterously merry or cheerful: a hilarious celebration.
  3. merry; cheerful.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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