/ˌɪnsɪˈkjʊə,ˌɪnsɪˈkjɔː/
(of a person) uncertain or anxious about oneself; not confident.
"a rather gauche, insecure young man"
Inadequate
/ɪnˈadɪkwət/
lacking the quality or...
Threatened
/ˈθrɛtn/
state one's...
Scared
/skɛːd/
fearful; frightened.
"I...
Anxious
/ˈæŋk.ʃəs/
feeling or showing...
Weak
/wiːk/
lacking the power to perform...