composed
v.v. calm and in control of your feelings, especially during a difficult or stressful time.
v. exhibiting self-possession and emotional control. Often used to describe a person's demeanor in high-pressure situations.
She remained composed even when the reporter asked a rude question.
The pilot stayed remarkably composed during the emergency landing, giving clear instructions to the crew.
Despite the chaotic atmosphere of the courtroom, the witness gave a composed testimony that significantly bolstered the defense's case.
Typically used as a predicative adjective after verbs like 'remain', 'stay', or 'appear'.
He was composed of the newsHe was composed after the newsThe adjective 'composed' (calm) does not take 'of'; the passive verb 'composed of' means 'made of'.