Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Slang Used as an intensive: He's a helluva great guy.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. hell of a; extreme

Etymologies

Alteration of hell of a.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Written form of a reduction of "Hell of a" (Wiktionary)

Examples

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