Inferiority refers to a state or condition in which something is considered lesser, smaller, weaker, lower in quality, or subordinate compared to others. It can also refer to feelings of being inferior or self-doubt, where an individual may lack confidence in their abilities and feel that they are not good enough or do not measure up to others. Inferiority complex is a term used to describe an extreme sense of inferiority, often resulting from negative experiences or beliefs about oneself.