The word "un-excogitable" means something that cannot be comprehended or imagined. Some synonyms for this word include unimaginable, inconceivable, unthinkable, incomprehensible, ungraspable, unfathomable, inscrutable, and impenetrable. These words all convey a sense of something that is beyond human understanding or reasoning, whether it be an idea, concept, or situation. When faced with something un-excogitable, it can be frustrating and bewildering, but it can also be humbling and inspiring to recognize the vastness of the unknown. Exploring these synonyms allows for a deeper understanding of the limits of human knowledge, and the awe-inspiring mysteries that exist in the universe.