A less used word for the term ‘area of responsibility’ is ‘remit’ (of somebody/something) or ‘remit’ (to do something), which means ‘the area of activity over which a particular person or group has authority, control or influence.’
Here are a couple of examples of the word in use:
1. “Such decisions are outside my remit.”
2. “In future, staff recruitment will fall within the remit of the division manager.”
3. “It’s our remit to report on new & upcoming trends”.
Challenge of the day: Try to use this word in your daily English exchanges. Good luck.