duty
Translation
duty, responsibility, task, tax
Examples
It is my duty to help you.
It is my duty to help you.
He is on duty tonight.
He is on duty tonight.
You have to pay duty on these goods.
You have to pay duty on these goods.
Grammar Patterns
((one's)) duty ((to-inf)) one's responsibility to do sth. It is my duty to protect them.
on duty working at a particular time The doctor is on duty now.
off duty not working at a particular time I am off duty tomorrow.
Similar Words
Synonyms: responsibility, obligation, task, tax; Antonyms: freedom, privilege
Etymology
From Old French 'deu' (owed), from Latin 'debere' (to owe). The core idea is something that is owed.
Memory Tips
Think of what is 'due' from you. It's your duty. Also, remember the popular game 'Call of Duty'.