Is DIOTA a Wordle Word?

Yes. DIOTA is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

What does DIOTA mean?

A vase or drinking cup with two handles.“On the shore here I found three handles of Greek unpainted diotæ, on which magistrates′ names are stamped.”

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: AverageIn the top 17% of all valid Wordle words for testing common letters.
Vowels: I, O, A
Unique letters: 5 of 5
Common letters: I, O, T, A

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.