Deportment (noun)

1. The way in which a person conducts themselves, especially in terms of manners and behavior.
2. The way in which a person carries or holds themselves, especially in terms of posture and bearing.

Origin:

From the old french word "deporter" meaning "to conduct oneself".

Examples:

1. The teacher praised the student for her exemplary deportment.
2. The deportment of the guests at the royal banquet was impeccable.
3. The deportment of the soldiers on parade was impressive.
4. The deportment of the athletes during the medal ceremony was exemplary.
5. Her deportment was perfect, she was the epitome of grace and poise.