composure or coolness shown in danger or under trying circumstances. ***synonyms: composure, equanimity, self-possession, level-headedness, equilibrium, aplomb, poise, assurance, self-assurance, self-control, nerve, calmness, coolness, countenance, collectedness. Definition of Sangfroid composure that is maintained even under great stress Examples of Sangfroid in a sentence Even as the building fell around him, the fireman maintained his sangfroid and rescued the little girl. The surgeon knew he had to keep his sangfroid during the complicated surgery. Although Jane was nervous standing in front of the judge, she held on to her sangfroid and did not let her nerves get the best of her. The police officer showed incredible sangfroid when he calmly took on the biker gang without any assistance. When the sound system stopped working, the experienced singer preserved her sangfroid and continued her performance. The professional gambler retained his sangfroid after losing a million dollar hand. At eight, my little girl is already a skilled liar who can keep her sangfroid without blinking during parental interrogation. Jake\\'s sangfroid led his principal to believe he was not concerned about his suspension. Since the thief had been stealing from art museums for over twenty years, he never lost his sangfroid, not even when he accidentally set off an alarm. The diver knew the only way to survive the shark attack was by maintaining his sangfroid and not panicking. calmness or poise in difficult situations. The hostage negotiator exhibited a sangfroid that oftentimes was more menacing than the sword at his throat, or the gun at his head.