facial expression, facial gesture - a gesture executed with the facial muscles

moue, pout, wry face - a disdainful pouting grimace

cross one's eyes, squint, squinch - partly close one's eyes; "The children squinted to frighten each other"

wince - make a face indicating disgust or dislike; "She winced when she heard his pompous speech"

smile - change one's facial expression by spreading the lips, often to signal pleasure

frown, glower, lour, lower - look angry or sullen, wrinkle one's forehead, as if to signal disapproval

screw up - twist into a strained configuration; "screw up one's face"

mop, mow, pout - make a sad face and thrust out one's lower lip; "mop and mow"; "The girl pouted"

communicate, intercommunicate - transmit thoughts or feelings; "He communicated his anxieties to the psychiatrist"