topduty

adjective
UK /ˌtɒpˈdjuːti/
US /ˌtɑːpˈduːti/

Being the most important job or thing to do.

Keeping the kids safe is our topduty task at the park.


OTHER MEANINGS

2. Of the highest quality or rank in a duty or role.

She is a topduty officer on the team.

3. Serving as the main guard or watch.

He took the topduty shift at the gate last night.

4. The most important responsibility in a group.

Feeding the pets is the topduty in our house.