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onus

o·nus

onus

 
 
pronunciation:
o ns
part of speech: noun
inflections: onuses
definition 1: an unwanted but necessary task; burden.
As the manager, the onus was on him to fire this very amiable but inefficient employee.
synonyms:
burden, responsibility
similar words:
charge, chore, duty, load, millstone, obligation, ordeal, task
definition 2: the blame or burden of responsibility.
He bore the onus for having made it possible for the secret documents to be stolen.
synonyms:
blame
similar words:
burden, fault, liability, load, responsibility