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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.
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Grin (noun)
A smile in which the lips are parted to reveal the teeth.
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Grin (noun)
A snare; a gin.
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Grin (verb)
To smile, parting the lips so as to show the teeth.
“Why do you grin?”
“Did I say something funny?”
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Grin (verb)
To express by grinning.
“She grinned pleasure at his embarrassment.”
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Grin (verb)
To show the teeth, like a snarling dog.
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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.”
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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.”
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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.”
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Smile (verb)
To express by smiling.
“to smile consent, or a welcome”
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Smile (verb)
To express amusement, pleasure, or love and kindness.
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Smile (verb)
To look cheerful and joyous; to have an appearance suited to excite joy.
“The sun smiled down from a clear summer sky.”
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Smile (verb)
To be propitious or favourable; to countenance.
“The gods smiled on his labours.”
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Grin (verb)
smile broadly
“Dennis appeared, grinning cheerfully”
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Grin (verb)
express with a broad smile
“‘My word,’ grinned the delighted man”
“she grinned her approval”
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Grin (verb)
grimace grotesquely so as to reveal the teeth
“the skull grinned back at him, its eye sockets dark and hollow”
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Grin (noun)
a broad smile
“a silly grin”