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noun

duty

DYOO-tee
noun
1
Something a person is morally or legally obligated to do.
"It's a nurse's duty to care for every patient equally."
"He felt it was his duty to report the accident."
2
A tax charged on goods, especially imports.
"They had to pay duty on the wine brought back from France."
3
The period during which someone is actively working or on call.
"The guard was on duty all night."

How to Use Duty

Learner’s notes

In plain EnglishAn obligation you're expected to fulfil, a tax on goods, or being actively at work.

Common pairings
on duty off duty sense of duty import duty call of duty

Word Forms

duties plural, Dutys plural

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It's a nurse's _____ to care for every patient equally.

Etymology

From Middle English duete, ultimately from "due" — something owed — plus the noun-forming ending "-ty."

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Definitions: FreeDict original editorial