Investigable is a word that means something is capable of being investigated. If you're looking for synonyms for this word, then here are a few options to consider. The first option is "provable," which means there's evidence or information that can support an investigation. Another term to consider is "examinable," which means that something can be analyzed and studied thoroughly. "Explore-able" is a third synonym that suggests an investigation may lead to discovering something new or previously unknown. Lastly, "researchable" implies that the subject matter is worth the effort and time required for a thorough investigation. Overall, these synonyms can help you find alternate ways of expressing the meaning behind "investigable".