Main entry: fix, fasten, secure
Definition: cause to be firmly attached
Usage: fasten the lock onto the door; she fixed her gaze on the man
Antonyms: unfasten
Definition: cause to become undone
Main entry: unafraid, untroubled, secure
Definition: free from fear or doubt; easy in mind
Usage: he was secure that nothing will be held against him
Antonyms: insecure
Definition: lacking self-confidence or assurance
Main entry: secure
Definition: free from danger or risk
Usage: secure from harm; his fortune was secure; made a secure place for himself in his field
Definition: lacking in security or safety
Antonyms: uncertain, unsure, incertain
Definition: lacking or indicating lack of confidence or assurance
Main entry: secure
Definition: not likely to fail or give way
Usage: the lock was secure; a secure foundation; a secure hold on her wrist
Antonyms: insecure
Definition: not firm or firmly fixed; likely to fail or give way
Antonyms: unsteady
Definition: subject to change or variation
Antonyms: leaky
Definition: permitting the unwanted passage of fluids or gases
Antonyms: loose
Definition: not tight; not closely constrained or constricted or constricting
Main entry: secure, safe, dependable, good
Definition: financially sound
Usage: a good investment; a secure investment
Definition: the absence of sound
Antonyms: unsound
Definition: not sound financially
Antonyms: unsound
Definition: not in good condition; damaged or decayed
Main entry: inviolable, impregnable, unassailable, unattackable, strong, secure
Definition: immune to attack; incapable of being tampered with
Usage: an impregnable fortress; fortifications that made the frontier inviolable; a secure telephone connection
Antonyms: vulnerable
Definition: susceptible to attack