The phrase "all possible" can be replaced with various synonyms depending on the context of the sentence. For example, "every conceivable" or "each and every potential" can be used when discussing all possible options or outcomes. Similarly, "the complete range," "every possible permutation," or "the full spectrum" can be used when discussing all possible variations of a particular thing. In scientific research, "every potential scenario" or "all conceivable situations" may be used to describe the scope of a study. No matter what the context, the use of synonyms can add variety and clarity to language while conveying the same meaning as "all possible".