noun / verb
scowl
SKOWL/skaʊl/
An angry or displeased facial expression, or making one.
The man scowls, drawing his eyebrows together and tightening his mouth.

Etymology
Scoulen already described an angry lowering of the brows. Its probable Scandinavian origin connects that expression with squinting or casting down the eyes.
In context
which made him scowl and feel ashamed
More examples
- She scowls at anyone who interrupts her.
- His cheerful smile turns into a scowl.
- They greeted the price increase with scowls.
Forms
scowl · scowls · scowled · scowling