"Rootin tootin" is an idiomatic expression that is commonly used to describe something as wild or exciting. This expression is typically associated with the Wild West and cowboy culture. If you're searching for alternatives to "rootin tootin," you may consider using phrases like "rowdy," "rip-roaring," or "boisterous." Other synonyms that can be used to describe something as exciting include "thrilling," "exhilarating," and "adventurous." For a more casual tone, one could use "fun," "lively," or "spirited." Regardless of which synonym you choose, it's important to select a word that effectively captures the overall tone and energy of your message.