"Debatable" is a versatile and commonly used word that expresses doubt or uncertainty about a particular topic. Some synonyms for this word include "controversial," which implies a disagreement among different parties, and "doubtful," which suggests a high level of uncertainty. Other synonyms include "questionable," "unclear," "vague," "ambiguous," "equivocal," and "open to discussion." Each of these words conveys a slightly different nuance, but they all suggest that there is room for disagreement or doubt about a particular issue. Whether you're discussing politics, science, or philosophy, there are many ways to express doubt or uncertainty, and these synonym suggestions can help you add nuance and clarity to your writing or speech.