Smile
A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a “Duchenne smile”. Smiles performed without the eye contraction may be perceived as insincere.
Among humans, smiling is an expression denoting pleasure, sociability, happiness, joy or amusement. It is distinct from a similar but usually involuntary expression of anxiety known as a grimace. Although cross-cultural studies have shown that smiling is a means of communication throughout the world, there are large differences among different cultures, with some using smiles to convey confusion or embarrassment.
Grin (noun)
A smile in which the lips are parted to reveal the teeth.
Grin (noun)
A snare; a gin.
Grin (verb)
To smile, parting the lips so as to show the teeth.
“Why do you grin?”
“Did I say something funny?”
Grin (verb)
To express by grinning.
“She grinned pleasure at his embarrassment.”
Grin (verb)
To show the teeth, like a snarling dog.
Grin (verb)
To grin as part of producing a particular facial expression, such as a smile or sneer.
“He grinned a broad smile when I told him the result.”
“He grinned a cruel sneer when I begged him to stop.”
Smile (noun)
A facial teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement or anxiety.
“She’s got a perfect smile.”
“He has a sinister smile.”
“She had a smile on her face.”
“He always puts a smile on my face.”
Smile (verb)
To have (a smile) on one’s face.
“When you smile, the whole world smiles with you.”
“I don’t know what he’s smiling about.”
“She smiles a beautiful smile.”
Smile (verb)
To express by smiling.
“to smile consent, or a welcome”
Smile (verb)
To express amusement, pleasure, or love and kindness.
Smile (verb)
To look cheerful and joyous; to have an appearance suited to excite joy.
“The sun smiled down from a clear summer sky.”
Smile (verb)
To be propitious or favourable; to countenance.
“The gods smiled on his labours.”
Grin (verb)
smile broadly
“Dennis appeared, grinning cheerfully”
Grin (verb)
express with a broad smile
“‘My word,’ grinned the delighted man”
“she grinned her approval”
Grin (verb)
grimace grotesquely so as to reveal the teeth
“the skull grinned back at him, its eye sockets dark and hollow”
Grin (noun)
a broad smile
“a silly grin”