in·se·cure 
/ˌɪnsɪˈkjɚ/ adjective
/ˌɪnsɪˈkjɚ/ adjective [more insecure; most insecure] : not secure: such as a : not confident about yourself or your ability to do things well : nervous and uncomfortable
▪ I feel shy and insecure around strangers. — often + about ▪ She used to be insecure about her height. ▪ He felt insecure about the idea of becoming a father. ▪ Many young people are insecure about the future. [=they believe that bad things might happen in the future]
b : not certain to continue or be successful for a long time
▪ an insecure investment ▪ He has always held low-paying, insecure jobs. [=jobs that people can lose easily] ▪ Most of these families are economically insecure. [=they do not have a dependable source of money]
c : not locked or well protected
▪ One of the building's rear doors was insecure. ▪ The country's borders remain insecure.
▪ I feel shy and insecure around strangers. — often + about ▪ She used to be insecure about her height. ▪ He felt insecure about the idea of becoming a father. ▪ Many young people are insecure about the future. [=they believe that bad things might happen in the future]
b : not certain to continue or be successful for a long time
▪ an insecure investment ▪ He has always held low-paying, insecure jobs. [=jobs that people can lose easily] ▪ Most of these families are economically insecure. [=they do not have a dependable source of money]
c : not locked or well protected
▪ One of the building's rear doors was insecure. ▪ The country's borders remain insecure.
— in·se·cu·ri·ty /ˌɪnsɪˈkjɚrəti/ noun, plural in·se·cu·ri·ties
[noncount] ▪ They share a sense of insecurity about the future. ▪ job/economic insecurity [count] ▪ the insecurities of teenagers
/ˌɪnsɪˈkjɚrəti/ noun, plural in·se·cu·ri·ties [noncount] ▪ They share a sense of insecurity about the future. ▪ job/economic insecurity [count] ▪ the insecurities of teenagers
