hellacious Hear it!

hellacious definition

☆ hel·la·cious (he lā′s̸həs)

adjective

Slang very great, bad, unbearable, etc.

Etymology: prob. fanciful formation from hell of a (see hell) + -acious

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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