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Definition of hellacious adjective from the Oxford Advanced Learner's Dictionary

hellacious

adjective

/heˈleɪʃəs/

/heˈleɪʃəs/

(North American English, informal)

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extremely difficult or bad
- hellacious traffic
- a hellacious storm
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See hellacious in the Oxford Advanced American Dictionary

Check pronunciation: hellacious

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noun

From the Topic

Physics and chemistry

C2

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