No.
Yes, "insecure" is an adjective, while its corresponding abstract noun is "insecurity." Abstract nouns refer to concepts, qualities, or conditions that cannot be physically touched or seen, and insecurity fits this definition as it describes a state of feeling uncertain or anxious.
He has insecurity about his self
Sample sentences using "insecurity": Ellen was afraid her insecurity about her performance would be all too obvious. We were alarmed at the insecurity of their center of operations.
Witness Insecurity was created on 2011-10-01.
15% Experienced food insecurity
The cast of Insecurity - 2011 includes: Sharam Vahday
Insecurity is like carrying a heavy weight on your shoulders that makes you doubt yourself and your worth. Just as the weight can be burdensome and exhausting, insecurity can weigh you down emotionally and mentally.
A lack of security.
with an insecurity.
Mostly fear and insecurity. Oh, and then there's Women. And greed. But still mostly fear and insecurity.
selfishness. insecurity.
with an insecurity.