The antonyms for the word "unknowns" can be divided into several categories. The first category includes words that describe things that are familiar or easily recognized, such as "knowns," "familiarities," and "recognizables." The second category consists of words that convey certainty, such as "certainties," "definites," and "sureties." The third category comprises words that suggest knowledge or understanding, such as "knowables," "understandables," and "fathomables." The fourth category includes words that imply visibility or exposure, such as "revealed," "unveiled," and "exposed." Overall, these antonyms highlight the contrast between the uncertain and unknown versus the certain and familiar.