The term "butt ends" refers to the blunt, rough or unfinished part of an object. This term is commonly used in the carpentry industry, but can also be applied to other fields. While there are no direct antonyms for the phrase "butt ends," one could use alternative terms such as "smooth ends," "polished edges," or "finished edges." These antonyms would be appropriate for instances where the edges of an object are smooth, sleek or refined. Other possible antonyms for "butt ends" could include "rounded edges," "sharp points," or "tapered tips." Ultimately, the antonyms used would depend on the specific context and intended meaning.