1.Definition: financially safe

"A secure investment"

Related Adjective(s):dependable, good, safe

2.Definition: free from danger or risk

"Secure from harm", "His fortune was secure", "Made a secure place for himself in his field"

3.Definition: free from fear or doubt; easy in mind

"He was secure that nothing will be held against him"

Related Adjective(s):unafraid, untroubled

4.Definition: immune to attack; incapable of being tampered with

"A secure telephone connection"

Related Adjective(s):impregnable, inviolable, strong, unassailable, unattackable

5.Definition: not likely to fail or give way

"The lock was secure", "A secure foundation", "A secure hold on her wrist"