Synonyms for "demeanor"

 Here are several synonyms for "demeanor":

• Behavior: This is a very common and direct synonym.
• Conduct: Similar to behavior, often implying a more formal or moral aspect.
• Manner: Refers to the way someone does things or behaves.
• Bearing: Suggests posture and the way someone carries themselves.
• Comportment: A formal word for behavior, especially in public.
• Deportment: Similar to comportment, often suggesting behavior influenced by training or breeding.
• Attitude: The way someone thinks and feels, often reflected in their behavior.
• Presence: The way someone appears or feels to others.
• Air: A particular quality or impression given by someone's demeanor.
• Disposition: A person's inherent qualities of mind and character.
• Mien: A person's appearance or manner, especially one indicating their mood or character (often literary).
• Carriage: Similar to bearing, referring to posture and movement.

The best synonym to use will depend on the specific context and the nuance you want to convey.