There are several synonyms that can be used in place of the phrase "most likely". These include probable, likely, expected, anticipated, foreseeable, and possible. Each of these words carries a slightly different connotation, with probable and likely suggesting a higher likelihood than possible or foreseeable. Anticipated and expected carry the idea of something being predicted or foreseen, while possible leaves room for chance or uncertainty. It's important to choose the right synonym based on the specific context and intended meaning of the sentence. Ultimately, these varied synonyms offer flexibility and nuance in our language.