Comportment
/kəmˈpɔːrtmənt/
Definition 1 of 1
Pro Tip 1/3Behavior Reflection
Comportment reflects character; it can suggest respect and professionalism or indicate carelessness. 
Her respectful comportment during the meeting impressed her colleagues.
Pro Tip 2/3Situational Use
Use 'comportment' to describe behavior in formal situations more often than in casual ones. 
The students were commended for their excellent comportment at the graduation ceremony.
Pro Tip 3/3Emotional Indicator
Comportment can reveal emotions; calmness or anxiety may be inferred from someone's behavior. 
Despite the tension in the room, his calm comportment did not waver.