Hm let me Google search that word for you.
in·se·cure
ˌinsiˈkyo͝or/Submit
adjective
1.
(of a person) not confident or assured; uncertain and anxious.
"a top model who is notoriously insecure about her looks"
synonyms: unconfident, uncertain, unsure, doubtful, hesitant, self-conscious, unassertive, diffident, unforthcoming, shy, timid, retiring, timorous, inhibited, introverted; More
antonyms: confident
2.
(of a thing) not firm or set; unsafe.