You have a DUTY, Your Grace.
Game of Thrones Season 6, Episode 7
Dereliction of DUTY in the face of
the enemy is a court-martial offense.
The Big Bang Theory Season 2, Episode 16
Same way I solved
my jury DUTY summons,
The Big Bang Theory Season 11, Episode 12
And it's our DUTY
to assist the capital in time of need.
Game of Thrones Season 3, Episode 1
I'm performing my sworn DUTY
as Hand of the King.
Game of Thrones Season 4, Episode 6