The word noncritical refers to something that is not crucial or of utmost importance. Antonyms for noncritical include critical, crucial, crucially, essential, imperative, important, necessary, significant, vital, and requisite. These words imply the importance and necessity of a certain matter. Critical is often used to describe something that is of primary importance or essential for the success or safety of something else, while imperative implies that something must be done to achieve a desired outcome or to avoid negative consequences. Thus, when discussing a concept or situation, using antonyms of noncritical can help emphasize the importance and urgency of a matter.