Rootin'-tootin is a slang phrase often used to describe something that is lively, exciting, or amusing. However, there are several other words that can be used as synonyms to convey the same meaning. These include phrases like rip-roaring, boisterous, high-spirited, lively, vivacious, and energetic. Additionally, words like exuberant, enthusiastic, and jubilant can also be used as synonyms for rootin'-tootin. Essentially, anything that implies a wild, fun-filled, or energetic activity can be used to describe rootin'-tootin, making it a highly versatile and useful phrase for those looking to inject some excitement into their language.