smile -
change one's facial expression by spreading the lips, often to signal pleasure
grimace,
make a face,
pull a face contort the face to indicate a certain mental or emotional state; "He grimaced when he saw the amount of homework he had to do"
dimple produce dimples while smiling; "The child dimpled up to the adults"
grin to draw back the lips and reveal the teeth, in a smile, grimace, or snarl
beam smile radiantly; express joy through one's facial expression
A smile is a facial expression formed by flexing the muscles near both ends of the mouth . The smile can also be found around the eyes. Among humans, it is customarily an expression denoting pleasure, happiness, or amusement, but can also be an involuntary expression of anxiety, in which case it is known as a grimace.
OmegaWiki Dictionary
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smile An upwards movement of the sides of the mouth that indicates happiness or satisfaction.
smile To make an upwards movement of the sides of the mouth, that indicates happiness or satisfaction.
