insecure

adjective

1
lacking self-confidence or assurance
an insecure person lacking mental stability
2
lacking in security or safety
his fortune was increasingly insecure
an insecure future
3
not firm or firmly fixed; likely to fail or give way
the hinge is insecure
4
not safe from attack

Also useful for “insecure”:Unscrambler— Rearrange the letters in “insecure”