Word parts troop + -er Pronunciation IPA (key): /ˈtruːpə(r)/ Audio (AU)(file) Hyphenation: troop‧er Homophone: trouper Noun Singular trooper Plural troopers (countable) (military) A trooper is a soldier of private rank in cavalry or armour. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads