Who'll is a contraction of the words "who" and "will," indicating future action or possibility. Synonyms for who'll include the phrases "who shall," "who would," and "who might." These phrases suggest uncertainty or open-endedness in the subject at hand, leaving room for interpretation or choice. Other synonyms for who'll may depend on the context or tone of the conversation. For example, in a more formal setting, one might use "who shall," while in a more casual or friendly conversation, "who'll" might be more appropriate. Ultimately, the best synonym for who'll is the one that most accurately conveys the intended meaning and fits the context of the conversation.
