Learner's definition of INSECURE
[more insecure; most insecure]
not secure: such as
not confident about yourself or your ability to do things well
nervous and uncomfortable
— 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]
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]
not locked or well protected