sourpuss (noun)

1. As the couple strolled along the moonlit beach, the sourpuss expression on his face didn't match the romantic atmosphere.

2. The haunted house had a resident sourpuss who would terrify visitors with his eerie and gloomy expression.

3. The film director wanted an actor who could perfectly portray the role of a sourpuss, adding a touch of realism to the movie.

4. Although known for her impeccable fashion sense, Mary occasionally sported a sourpuss expression, adding a hint of edginess to her style.