The word "unknowability" refers to the inability to be known or understood. There are several synonyms for this word, including "incomprehensibility," "mystery," "inscrutability," and "abstruseness." These words describe the concept of something that is beyond our comprehension or outside of our understanding. Other synonyms include "enigma," "obscurity," and "perplexity," which suggest a sense of confusion or bewilderment. Each of these words captures a different aspect of unknowability, whether it be the mysterious nature of something, its complexity, or simply the fact that it is beyond our ability to understand. Together, they provide a rich vocabulary for discussing topics that are difficult to comprehend.