inferiority complex

US /ɪnˌfɪriˈɔrəti ˈkɑmplɛks/
UK /ɪnˌfɪriˈɔrəti ˈkɑmplɛks/
"inferiority complex" picture
1.

an unrealistic feeling of general inadequacy caused by actual or supposed inferiority in one sphere, sometimes marked by aggressive behavior in compensation.

:
He developed an inferiority complex after failing the exam multiple times.
Her constant need for validation stemmed from a deep-seated inferiority complex.