1.  | 缺乏信心的;无把握的not confident about yourself or your relationships with other people  | 
He's very insecure about his appearance. 他对自己的长相没有信心。  | |
She felt nervous and insecure. 她感到局促不安。  | 
2.  | 不安全的;无保障的;不牢靠的not safe or protected  | 
Jobs nowadays are much more insecure than they were ten years ago. 当今的工作比十年前要不稳固得多了。  | |
As an artist he was always financially insecure. 作为一名艺术家,他在经济上总是没有保障。  | |
Insecure doors and windows(= for example, without good locks) make life easy for burglars. 门窗不牢靠方便了窃贼。  | 
