"Wert at" does not exist as a single word in the English language. However, the closest word that may closely resemble it is "warrant." The antonyms for "warrant" include words such as disapprove, disagree, deny, reject, and invalidate. When used as a verb, "warrant" indicates a guarantee or authorization of something, as in "This ticket warrants entrance to the concert." Its antonyms suggest the opposite of assurance or permission. The use of antonyms is a crucial aspect of language, as they help convey meaning and provide a broader perspective on a given concept or idea.