criticalduty

noun
UK /ˈkrɪtɪkəl ˈdjuːti/
US /ˈkrɪtɪkəl ˈduːti/

A very important job that you must do carefully.

Checking the brakes is a critical duty for a bus driver.


OTHER MEANINGS

2. A duty that must be done right away because something bad could happen if it is not.

The nurse's critical duty was to give the medicine on time.

3. A job in a game or story that is needed to win or finish.

Finding the hidden key was a critical duty in the treasure hunt.

4. A task that is watched closely to make sure it is done well.

The safety check is a critical duty at the factory.