The phrase "hits high spot" refers to something that is successful, outstanding or reaches the desired level of achievement. The antonyms of this expression could be disapprove, discommend, condemn, or rebuff. These words indicate negativity and rejection instead of acceptance and appreciation. Other antonyms that can be used in place of "hits high spot" include flop, failure, debacle, disaster, or fiasco. These terms signify a lack of success, achievement or an underwhelming performance, opposed to the sense of accomplishment that the original phrase implies. Overall, it is important to recognize the importance of language and choose words that accurately convey the intended meaning.