cavalier
Word family adjectivecavalierishnouncavalierismcavalieradverbcavalierly
cav·a·lier /ˌkævəˈlɪə◂ $ -ˈlɪr◂/ adjectiveadj [usually before noun] CARELESSnot caring enough about rules, principles, or people’s feelings 满不在乎的,随便的,轻慢的 a cavalier attitude to the laws 对待法律满不在乎的态度
Cavaliern noun na supporter of King Charles I against parliament in the English Civil War of the 17th century, in which the Cavaliers fought against the roundheads Origin cavalier (1500-1600) French Old Italian cavaliere, from Late Latin caballarius “horse-rider”, from Latin caballus “horse”