The Faith Militant are very STERN
with those who overstep their bounds.
Game of Thrones Season 6, Episode 6
And repay the slavers with what? Kindness?
A fine? A STERN warning?
Game of Thrones Season 4, Episode 7
...and did so
using a STERN facial expression.
The Big Bang Theory Season 4, Episode 24
Stern.
Game of Thrones Season 1, Episode 10
The Father's face is STERN and strong
Game of Thrones Season 3, Episode 6