The term "make flip" can have several different meanings depending on the context of its usage. However, if we consider just one of its meanings, i.e., "to turn upside down," some of its antonyms could be 'right side up,' 'upright,' or 'erect.' In contrast, another meaning of "make flip" could be "to change one's attitude or opinion quickly," and its antonyms could be 'steady,' 'consistent,' or 'unchanging.' Similarly, if we think of "make flip" as 'to cause commotion or uproar,' its antonyms could be 'calm,' 'quiet,' or 'serene.' Thus, based on the context, there can be several antonyms for the term "make flip.