insecure

adjective
UK /ˌɪnsɪˈkjʊə/
US /ˌɪnsɪˈkjʊr/

Not feeling sure or safe about yourself.

He felt insecure about speaking in front of the class.


OTHER MEANINGS

2. Not safe or well protected.

The old fence looked insecure and easy to climb over.

3. Not firmly fixed and likely to move or fall.

The shelf was insecure and wobbled when we touched it.

4. Not safe from being stolen or attacked.

The website was insecure, so the passwords could be stolen.