What are the opposite words for superfluou?

Finding antonyms for the word "superfluous" can be challenging. The term "superfluous" means something that is excessive, unnecessary, or surplus. The opposite of this term is "essential," which means something that is necessary, crucial, or vital. Other antonyms for superfluous can be "indispensable," "invaluable," "important," and "significant." These words represent the opposite of being unnecessary or excessive, and instead, they allude to elements that are pivotal and cannot be dismissed. Therefore, antonyms for "superfluous" are words that point to the importance of something or its necessity.

Antonym of the day

let the cat ouf bag
be quiet, conceal, hide.