Mootable is an uncommon word that means something that is open for discussion or debate. It can be replaced by various synonyms, depending on the context of use. For example, the word debatable is an appropriate synonym for mootable, as it also implies something that is uncertain and requires further discussion or investigation. Another alternative is disputable, which connotes a point or issue in which different parties have different opinions about. On the other hand, the word controversial is also a good match for mootable, as it highlights the potential for disagreement or contentiousness in a topic. Overall, using synonyms for mootable adds depth and nuance to the language, making it more precise and expressive.