The antonyms for the word "un-knowable" include "knowable," "discoverable," "understandable," and "known." These words refer to the ability to comprehend or gain knowledge about something. If something is "knowable," it means that it can be understood or recognized, while "discoverable" pertains to the possibility of being found or revealed. "Understandable" expresses the capacity to be comprehended or perceived, and "known" refers to the fact that information about something has been acquired, verified, or accepted. The antonyms for "un-knowable" suggest that there is hope to gain knowledge or understanding about a certain subject or situation.