The phrase "a musts" is often used to express something that is essential or necessary. Its antonyms, on the other hand, refer to things that are optional or discretionary. Words like "unnecessary," "discretionary," "nonessential," "optional," and "voluntary" can be used as antonyms for "a musts." For example, taking part in extracurricular activities can be nonessential for some students, while others may consider it a must. Similarly, exercising can be an optional activity for some individuals, while others may view it as a necessary part of their daily routine. Understanding the antonyms of "a musts" can help us prioritize and make informed decisions about what is vital and what isn't in our lives.