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duty noun [ ˈdjuːti ]

• a moral or legal obligation; a responsibility.
• "it's my duty to uphold the law"
Similar: responsibility, obligation, commitment, obedience, allegiance, loyalty, faithfulness, fidelity, respect, deference, reverence, homage, fealty,
• a task or action that one is required to perform as part of one's job.
• "the queen's official duties"
Similar: job, task, chore, assignment, commission, mission, function, charge, part, place, role, concern, requirement, responsibility, obligation, work, burden, onus, pigeon, office,
• a payment levied on the import, export, manufacture, or sale of goods.
• "a 6 per cent duty on imports"
• the measure of an engine's effectiveness in units of work done per unit of fuel.
Origin: late Middle English: from Anglo-Norman French duete, from Old French deu (see due).

do duty as

• serve or act as a substitute for something else.
"the rusting shack which did duty as the bridge"

on duty

• engaged in one's regular work.
"there were only two doctors on duty that night"

off duty

• not engaged in one's regular work.
"an off-duty police officer saw the incident"



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