s'apaiser bedeutet auf Englisch

quiet [quieted, quieting, quiets]▼◼◼◼(to become quiet or calm)
verb
[UK: ˈkwaɪət] [US: ˈkwaɪət]

calm down▼◼◼◻(To become less excited)
verb
[UK: kɑːm daʊn] [US: ˈkɑːm ˈdaʊn]