1. 随便;短期;粗心：castle避居地; 城堡 | casualness随便;短期;粗心 | celebrations称颂; 庆祝会
2. 偶然：cash现金 钱 兑现 99 | casualness偶然 02 | casualty事故 00
3. 无心：casuallyprovisionally 临时地 | casualness 无心 | casualtiesinjuriesanddeathscasualty 伤亡
4. 偶然的：Telly电视 | Casualness偶然的 | Omit省略
1. He can put on an air of calculated casualness that tells women that he cares without looking obsequious.
2. Technology curve aside, there's a certain casualness about getting things done in China.
noun
1. a casual manner
Synonym: familiarity