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Definition of heinousness noun from the Oxford Advanced Learner's Dictionary

heinousness

noun
 
/ˈheɪnəsnəs/,
 
/ˈhiːnəsnəs/
 
/ˈheɪnəsnəs/
[uncountable] (formal)
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  1. behaviour that is morally very bad; the fact of being morally very bad
buttercup
noun
 
 
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