Dictionary of Human Evolution and Biology

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Facial Expression

Mobility of the features that gives a particular emotional significance to the appearance of the face; behaviors (in certain primates) that imply emotions such as joy, anger, submission, a threat, or invitation to play suggested by facial features more than by body language or vocalization; a form of nonverbal communication.

See alert face (f.), frowning bared-teeth scream f., hoot f., lip smacking f., pout f., relaxed open-mouth f., silent bared-teeth f., staring bared-teeth scream f., staring openmouth f., and threat f.

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