1. old-fashioned Particularly vigorous, exciting, exhilarating, or successful. Sometimes written with a comma instead of a hyphen. Come try our ziplining course today if you're looking for a rootin'-tootin' good time! The bake sale was a rootin'-tootin' success. Wow, what a rootin', tootin' party!
2. Characteristic of the stereotypes associated with cowboys or the Western genre of fiction. The historical park is filled with old-timey saloons and rootin'-tootin' cowboys. I love watching those classic rootin'-tootin' westerns from the '50s and '60s.
mod. exciting; renown; famous; illustrious. (A vague adjective of praise.) We really had a rooting-tooting time last weekend.