The antonyms for "roughs tumble" could be smoothness and stability. Smoothness refers to the absence of roughness, bumpiness, or uneven surfaces, while stability alludes to a state of being firm, solid, unchanging, or steady. Both words are the complete opposites of "roughs tumble" and can describe various things such as a surface, a relationship, or a situation. In contrast to the jarring and chaotic nature of "roughs tumble," smoothness connotes a sense of calm and ease, while stability offers a feeling of security and reliability. Thus, the antonyms for "roughs tumble" hold a significant contrast both literally and figuratively.