Mien
/miːn/
Definition 1 of 1
Pro Tip 1/3Visual Impression
Refers to the overall visual impact one's presence has on others, based on appearance and demeanor. 
Upon entering the room, his regal mien immediately demanded respect.
Pro Tip 2/3Reflects Personality
Suggests aspects of someone's personality or character, typically through their facial expressions and posture. 
Her stern mien hinted at her no-nonsense approach to management.
Pro Tip 3/3Subtle Nuances
Covers the subtle traits of someone's behavior or appearance that might not be immediately obvious. 
His thoughtful mien betrayed an underlying sadness despite his smile.