a member of a band of irregular soldiers that uses guerrilla warfare, harassing the enemy by surprise raids, sabotaging communication and supply lines, etc.

pertaining to such fighters or their technique of warfare

guerrilla strongholds; guerrilla tactics.

noun

commando , freedom fighter , irregular , mercenary , professional soldier , resistance fighter , soldier of fortune , terrorist , underground fighternotes:guerrilla is from a spanish diminutive of guerra \'war\' and refers to a soldier of an independent armed resistance force; gorilla is the ape , fighter , partisan , saboteur , soldier