Answer
The inferiority complex, coined by Alfred Adler, refers to a psychological state where individuals feel inadequate and inferior to others. It stems from a deep-rooted sense of insecurity, stemming from perceived shortcomings and a lack of self-esteem. People with this complex often strive to overcompensate for their perceived deficiencies, resulting in excessive competitiveness, arrogance, or aggression as defense mechanisms to mask their underlying feelings of inadequacy.