Definition of hellacious in English:

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Pronunciation: /hɛˈleɪʃəs/


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.



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.


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

Words that rhyme with hellacious

Athanasius, audacious, bodacious, cactaceous, capacious, carbonaceous, contumacious, Cretaceous, curvaceous, disputatious, edacious, efficacious, fallacious, farinaceous, flirtatious, foliaceous, fugacious, gracious, herbaceous, Ignatius, loquacious, mendacious, mordacious, ostentatious, perspicacious, pertinacious, pugnacious, rapacious, sagacious, salacious, saponaceous, sebaceous, sequacious, setaceous, spacious, tenacious, veracious, vexatious, vivacious, voracious

For editors and proofreaders

Line breaks: hell|acious

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