1. A dignified and formal bearing or demeanor; composed and serious manner befitting a formal or ceremonial occasion
The judge maintained a solemn composure throughout the trial.
O juiz manteve uma compostura solene durante todo o julgamento.
2. Calm, serious, and dignified behavior displayed in formal or religious contexts
The priest approached the altar with solemn composure.
O padre aproximou-se do altar com compostura solene.