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English definition of “the onus”

the onus

noun [S]     /ˈəʊ.nəs/ US  /ˈoʊ-/ formal
the responsibility or duty to do something: [+ to infinitive] The onus is on the landlord to ensure that the property is habitable. We are trying to shift the onus for passenger safety onto the government.Duty, obligation and responsibility
(Definition of the onus noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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