Is STOAI a Wordle Word?

Yes. STOAI is a valid Wordle word.

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

What does STOAI mean?

Plural of stoa: In Ancient Greece, a walkway with a roof supported by colonnades, often with a wall on one side; specifically, the Great Hall in Athens.

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

Starter word rating: GoodIn the top 7% of all valid Wordle words for testing common letters.
Vowels: O, A, I
Unique letters: 5 of 5
Common letters: T, O, A, I

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.