Definition of composure noun from the Oxford Advanced American Dictionary

 

composure

 noun
noun
NAmE//kəmˈpoʊʒər//
 
[uncountable]
 
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the state of being calm and in control of your feelings or behavior to keep/lose/recover/regain your composure He maintained his composure despite a desperate desire to laugh.
See the Oxford Advanced Learner's Dictionary entry: composure