"Cutting some ice" is an idiom which means that you are making a positive impression or starting to be noticed. The opposite of "cutting some ice" would be "falling flat" or "failing to impress". Other antonyms could be "disappointing", "underwhelming", "unremarkable", and "unsatisfactory". When someone is not cutting some ice, they are not making an impact or a positive impression on others. It is important to be aware of the opposite effect of the idiom in order to determine if you are truly making a lasting impression or if you need to put in more work to gain the recognition you desire.