Main entry: insecure
Definition: lacking self-confidence or assurance
Usage: an insecure person lacking mental stability
Antonyms: unafraid, untroubled, secure
Definition: free from fear or doubt; easy in mind
Main entry: unsafe, insecure
Definition: lacking in security or safety
Usage: his fortune was increasingly insecure; an insecure future
Antonyms: secure
Definition: free from danger or risk
Main entry: insecure
Definition: not firm or firmly fixed; likely to fail or give way
Usage: the hinge is insecure
Antonyms: secure
Definition: not likely to fail or give way
Main entry: insecure, unsafe
Definition: not safe from attack
Antonyms: invulnerable
Definition: immune to attack; impregnable