Answer: "Imperative" and "trivial" are antonyms.
Explanation: The term "antonyms" makes reference to words that have opposite meanings. In contrast, synonyms are words that share similar meanings. "Imperative" and "trivial" are antonyms because they have contrasting meanings. On the one hand, "imperative" is an adjective used to describe something as very important or crucial. On the other hand, "trivial" refers to something that has little importance.
