A facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement, goodwill, or anxiety.

(transitive, intransitive) To have (a smile) on one's face. / (transitive) To express by smiling. / (intransitive) To express amusement, pleasure, or love and kindness.

simple past tense and past participle of smile

plural of smile

Third-person singular simple present indicative form of smile

Full of smiles.

A quantity revealed by a smile.

plural of smileful

A surname from Old English.

Abbreviation of Simplified molecular-input line-entry system.