* Nothing: This is the most direct opposite, meaning absolutely none.
* Something: This implies a specific part or element, as opposed to the entirety.
* Anything: This refers to any possible thing, excluding everything.
* Nothingness: This refers to the state of non-existence.
* Specific item/category: For example, if you're talking about "everything in the kitchen," the opposite could be "nothing in the living room."
Ultimately, the best opposite of "everything" depends on the intended meaning and the specific context of the sentence.