The phrase "most exhibition" can be replaced with several synonyms depending on the context it is being used in. For example, if the word is being used to describe an event or a show, alternatives that can be used include "most display," "most showcase," "most expo," "most fair," or "most exposition." In a different context, such as describing someone's behavior, words like "most demonstrative," "most overt," "most expressive," or "most flamboyant" can be used. It is important to choose the appropriate synonym based on the meaning one wants to convey to their readers.