"insecure" in the adjective sense
not firm or firmly fixed likely to fail or give way
"the hinge is insecure"
2. insecure, unsafe
lacking in security or safety
"his fortune was increasingly insecure"
"an insecure future"
lacking self-confidence or assurance
"an insecure person lacking mental stability"
4. insecure, unsafe
not safe from attack
Source: WordNet® (An amazing lexical database of English)
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