frown

A wrinkling of the forehead with the eyebrows brought together, typically indicating displeasure, severity, or concentration.

Philip had once told him of a man who had a horse-shoe frown, and Tom had tried with all his frowning-might to make a horse-shoe on his forehead

He encounters some obstacle in his train of reasoning ... and then a frown passes like a shadow over his brow.

A downturn of the corners of the mouth, typically expressing sadness.

The smile and the frown are both indicated and the operation of a motor driven flasher causes the face to look happy and sad in turn.

Any facial expression that indicates disapproval or displeasure.

To have a frown on one's face.

She frowned when I told her the news.

To manifest displeasure or disapprobation; to look with disfavour or threateningly.

Noisy gossip in the library is frowned upon.

The sky doth frown and lower upon our army.

To repress or repel by expressing displeasure or disapproval; to rebuke with a look.

Let us frown the impudent fellow into silence.

To communicate by frowning.

Frank frowned his displeasure with my proposal.

As the band paused between songs, a gust of wind blew a distinctive Worthy Farm odour in the direction of drummer/vocalist Julien Ehrich: “Wow,” he frowned, “this place smells of cow shit.”