baisser d'un ton betyder på engelska

back off▼◼◼◼(to lower the setting of)
verb
[UK: ˈbæk ɒf] [US: ˈbæk ˈɒf]

back down▼(to take less aggressive position)
verb
[UK: ˈbæk daʊn] [US: ˈbæk ˈdaʊn]