dignified

/ˈdɪɡnɪfaɪd/
adjective
  1. Having or showing a calm, serious, and respectful manner; worthy of respect.
    • She remained dignified even when the audience disagreed with her speech.
    • The old library had a dignified atmosphere with its high ceilings and marble floors.
    • The judge spoke in a dignified tone that made everyone in the courtroom listen carefully.