doctrine, ism, philosophical system, philosophy, school of thought - a belief (or system of beliefs) accepted as authoritative by some group or school

crusade, campaign, cause, drive, effort, movement - a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"

feminist, libber, women's liberationist, women's rightist - a supporter of feminism