Bucking is a term used to describe the sudden movements of animals, especially horses, who try to throw off a rider or other load. When something is described as "most bucked," it means that it has undergone the most bucking or jolting. Some antonyms for the word "most bucked" could include "stable," "smooth," "calm," "gentle," "placid," or "still." Conversely, synonyms for "most bucked" include "jerky," "jarring," "bumpy," "uneven," "disruptive," and "agitated." These opposite meanings show that something that has not been "most bucked" is likely to be more predictable, even-keeled, and easier to handle.