insecure
adjective
1. not firm or firmly fixed; likely to fail or give way
- the hinge is insecure
Similar word(s): unfixed
2. lacking in security or safety
- his fortune was increasingly insecure
- an insecure future
Similar word(s): unprotected, dangerous, unsafe, precarious, shaky, unguaranteed, unsecured, vulnerable, unsafe
3. lacking self-confidence or assurance
- an insecure person lacking mental stability
Similar word(s): overanxious, unassured
4. not safe from attack
Similar word(s): vulnerable, unsafe
Sentences with insecure as an adjective:
- He's a nice guy and all, but seems to be rather insecure around other people.