- secure, unafraid, untroubled - free from fear or doubt; easy in mind; "secure himself, he went out of his way to help others"
Antonyms: insecure, overanxious, unassured
- secure - free from danger or risk; "secure from harm"; "his fortune was secure"; "made a secure place for himself in his field"
Antonyms: insecure, unsafe, embattled, precarious, shaky, uncertain, unsure, unguaranteed, unsecured
- protected, secure - kept safe or defended from danger or injury or loss; "the most protected spot I could find"
- secure - not likely to fail or give way; "the lock was secure"; "a secure foundation"; "a secure hold on her wrist"
Antonyms: insecure, loose, precarious, uncertain
- impregnable, inviolable, secure, strong, unassailable, unattackable - able to withstand attack; "an impregnable fortress"; "fortifications that made the frontier inviolable"
Antonym: vulnerable (indirect, via invulnerable)
- dependable, good, safe, secure - financially sound; "a good investment"; "a secure investment"
Antonym: unsound (indirect, via sound)