burden
noun
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weight to be borne or conveyedloading
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an onerous or difficult concern“the burden of responsibility”load
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the central idea that is expanded in a document or discourse
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the central meaning or theme of a speech or literary workcore
verb
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to impose a task upon, assign a responsibility to“The commander burdened their junior officers with paperwork.”charge
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to weigh down with a load“They burdened the pack mule with extra supplies.”burthen