What are the opposite words for fundamental?

The term fundamental indicates the primary or essential components of something, yet there are various antonyms that oppose its definition. The first antonym for fundamental is superficial, indicating something that is not essential or important. Trivial is another antonym that portrays something as unimportant and insignificant. Regarding the opposite of primary, we can use secondary or auxiliary, indicating a factor that isn't as critical as the primary components. Additionally, the word peripheral is another term that describes something that isn't essential or central to a situation or scenario. Ultimately, these antonyms for fundamental shift the focus from the essential components of something and draw our attention to things that are less important.