insecure

Academic Word List, sublist 2.

About 2.26 uses per million words.

Meaning

1. adjective Not secure.
2. adjective Not comfortable or confident in oneself or in certain situations.

   He's a nice guy and all, but seems to be rather insecure around other people.

Similar words

unassured unsound unguaranteed unsafe unsecured bad unsure uncertain vulnerable precarious

Often followed by

and about in attachment as or to because that

Word family

insecurely insecureness insecurenesses insecurities insecurity institute instituted institutes instituting institution