The antonyms for the phrase "most big-gun" can be found by breaking down the phrase. "Most" indicates a superlative degree while "big-gun" refers to someone or something powerful, influential, or significant. Thus, antonyms for "most big-gun" may include "least influential," "least significant," "weakest," "low profile," among others. These words signify the opposite of being a big-shot or a powerful figure. While "most big-gun" represents dominance and superiority, its antonyms describe insignificance and inferiority. It is essential to understand these antonyms to express the speaker's perspective and convey the intended message clearly.