Paramount is an adjective that means "more important than anything else" or "supreme." The antonyms for paramount are "insignificant," "unimportant," or "secondary." These words indicate a lack of importance or superiority in comparison to something else. Another antonym for paramount is "inferior," indicating a lower rank or status. Synonyms for paramount include "dominant," "preeminent," and "foremost." The choice of an antonym will depend on the context and the nature of the comparison being made. In any case, when something is described as paramount, it means it is of utmost importance and should not be overlooked.