A freedom fighter is someone who fights for freedom, usually through GUERRILLA warfare, rebellion, or revolution. The term 'GUERRILLA' is an 8-letter word used to describe a small group of combatants engaging in unconventional warfare. A 9-letter variation of the word, 'guerrila, ' is also used. A 5-letter word, 'REBEL, ' is often used to refer to someone who resists authority, especially a government, and opposes established rules and customs. Finally, a 13-letter word, 'REVOLUTIONARY, ' is used to describe someone who advocates or participates in a revolution, which is a radical and pervasive change in society and the social structure.