inclination, tendency, disposition - an attitude of mind especially one that favors one alternative over others; "he had an inclination to give up too easily"; "a tendency to be too strict"

social control - control exerted (actively or passively) by group action

able-bodiedism, able-bodism, ableism, ablism - discrimination in favor of the able-bodied

ageism, agism - discrimination against middle-aged and elderly people

cronyism - favoritism shown to friends and associates (as by appointing them to positions without regard for their qualifications)

fatism, fattism - discrimination against people who are overweight

heterosexism - discrimination in favor of heterosexual and against homosexual people

nepotism - favoritism shown to relatives or close friends by those in power (as by giving them jobs)

racial discrimination, racialism, racism - discriminatory or abusive behavior towards members of another race

sexism - discriminatory or abusive behavior towards members of the opposite sex