duty
word
Definition
A duty is something you are expected or required to do because of your job, role, moral responsibility, or the law. It can also mean a period of work when someone is officially serving, such as being on duty.
Usage & Nuances
Common patterns: 'a sense of duty', 'do your duty', 'on duty'/'off duty'. 'Duty' often sounds more formal than 'job' or 'task' and can suggest moral seriousness, not just practical responsibility. It also appears in fixed phrases like 'customs duty' (tax on imports).
Example Sentences
When you're off duty, try not to check work messages every five minutes.
natural
It is our duty to help others.
basic
The nurse is on duty tonight.
basic
One of his duties is answering emails.
basic
I stayed late because I didn’t want to leave my duty to someone else.
natural
He did it out of duty, not because he wanted praise.
natural