smile
verb (used without object)
to assume a facial expression indicating pleasure, favor, or amusement, but sometimes derision or scorn, characterized by an upturning of the corners of the mouth.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
His cheeks were creased with a dimpling subsmile, half uneasy, half malicious, and his tread was mincing and catlike.
From Vice Versa or A Lesson to Fathers by Anstey, F.