One was a soft, lean man, with a sour smile.

She met him with a sour smile, humorless and certain.

The chairman finished making his notes, then looked up again with a sour smile.

Then, after a moment she fixed him with a sour smile.

Then understanding came, and the frown turned to a sour smile.

The grimace could almost have been her old, sour smile.

The private detective greeted her with a very sour smile.

He looked back at her, a sour smile on his lips.

She gave me a sour smile as she turned to leave.

She gave him a sour smile and did not reply.