Definition of "hellaciously" []

• In a hellacious manner (adverb)

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• "Nobody who's been anywhere near Denver this week needs any evidence for the fact that it's been hellaciously cold."
• "Nobody who s been anywhere near Denver this week needs any evidence for the fact that it s been hellaciously cold."
• "It's not easy to get there in a boat, the water is hellaciously turbulent even on a fair day, and then once you arrive, federal law prohibits you from going ashore."