Definition of hellacious in English:

hellacious

Line breaks: hell|acious
Pronunciation: /hɛˈleɪʃəs
 
/

adjective

North American informal
Very great, bad, or overwhelming: there was this hellacious hailstorm
More example sentences
  • To the contrary, investment by multinational corporations can help alleviate the hellacious environmental conditions from which poor nations suffer.
  • We book ourselves out every November so we have time to relax after a hellacious summer schedule and so we can enjoy the coming holiday season starting with Thanksgiving.
  • All I know is that my wife asked me to do something, because she hasn't had a good night sleep since 2000, and she has a hellacious trial coming up.

Origin

1930s: from hell + -acious, perhaps suggested by bodacious.

Derivatives

hellaciously

adverb
More example sentences
  • When some people moved into the cabin next door about Thursday and turned their hellaciously loud children loose, I broke out the noise-canceling headphones and realized I should have been doing that for at least an hour every day.
  • But sterilizing a spacecraft is hellaciously difficult.
  • I think that she was making a choice, a hellaciously bad one, but a choice all the same.

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