The phrase "most hotshot" implies someone who is highly skilled or successful, especially in their profession or area of expertise. Antonyms for this phrase could include terms that describe a person who is inexperienced, mediocre, or underqualified. Other possible antonyms might include terms that denote humility, modesty, or a lack of ambition. For example, someone who is "unassuming," "unremarkable," or "ordinary" might be considered an antonym for "most hotshot." Similarly, terms like "modest," "humble," or "self-effacing" might be used to describe someone whose attitude and demeanor are the opposite of what is typically associated with a "hotshot" individual.