When it comes to describing "the unknowns," there are several synonyms that can be used to convey the same meaning. Some of these synonyms could be things like "uncertainties," "unfamiliar territories," "dark horse," or even "ambiguities." Each of these words denotes a sense of uncertainty or lack of concrete knowledge, and can be used interchangeably with "the unknowns" depending on the context. Whether discussing an unexplored area of science or an uncertain future, any of these synonyms can be used to effectively convey the concept of "the unknowns" to a reader or listener.