Cogitable is an adjective used to describe something that can be thought about or contemplated. Synonyms for cogitable include imaginable, conceivable, thinkable, ponderable, and mullable. These words all suggest that something can be imagined, considered, or reflected upon. Other synonyms for cogitable include comprehensible, understandable, apprehensible, and perceivable. These words suggest that something can be understood or perceived in a way that leads to further contemplation. Overall, using synonyms for cogitable can help to expand one's vocabulary and convey a more nuanced understanding of complex ideas.