discomposure

/ˌdɪskəmˈpoʊʒər/
noun
  1. A state of being disturbed, anxious, or lacking calmness; mental or emotional agitation.
    • His discomposure was obvious when he dropped his notes.
    • She tried to hide her discomposure behind a forced smile.
    • The sudden noise caused a moment of discomposure in the audience.