The antonyms for the word "more knowhow" can be ignorance, unfamiliarity, inexperience, incompetence or ineptitude. When someone lacks the knowledge, skills, and expertise in a particular field, they can be deemed as ignorant or inexperienced. Likewise, incompetence and ineptitude reflect the inability or incapacity to perform a task or handle a situation effectively. These antonyms suggest a lack of expertise or mastery in a subject matter or the inability to apply learned knowledge in practical settings. In short, while "more knowhow" means having the relevant knowledge and skills to achieve a goal, the antonyms suggest a dearth of such expertise or the failure to apply it adequately.