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Meaning of onus

o•nus

Pronunciation: (ō'nus), [key]
— pl. o•nus•es.
  1. a difficult or disagreeable obligation, task, burden, etc.
  2. burden of proof. Cf.
  3. blame or responsibility.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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