1. 幸福，幸运，快乐，愉快
2. 恰当，巧妙
3. 高兴；满足
4. 合适 词形变化
- 形容词比较级 happier，happiest
- 副词 happily
- 名称 happiness
- state of well-being characterized by emotions ranging from contentment to intense joy
- emotions experienced when in a state of well-being
1. 幸福，幸运，快乐，愉快
2. 恰当，巧妙
3. 高兴；满足
4. 合适 词形变化