Crusader/kruːˈseɪdər/ Definition 1 of 2Pro Tip 1/3Modern Activism Today, 'crusader' is often used metaphorically for activists and reformers without religious context. He became a crusader against plastic pollution. Pro Tip 2/3Positive Connotations 'Crusader' typically suggests a positive view of someone's dedication to a cause. A crusader for animal rights, she inspired many. Pro Tip 3/3Behavior Hint Using 'crusader' implies action; not just beliefs, but taking steps to make change. She's not just an ally, she's a crusader.