When we are uncertain about something and want to express a likelihood, we often use the phrase "most probably." However, there are numerous synonyms that can be used to express a similar degree of probability. These include "likely," "probable," "apparently," "presumably," "seemingly," "perhaps," "may well," "possibly," "conceivably," and "plausibly." These words can be used interchangeably, depending on the context and desired emphasis. Using synonyms can help to add variety to our language and make our writing more interesting and engaging.