Is RESAY a Wordle Word?

Yes. RESAY is a valid Wordle word.

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

What does RESAY mean?

To say again, to repeat, to reiterate.“If we say something and people reject it because they don't like that it is true then we must resay it, and keep resaying it, until the truth is heard.”

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

Starter word rating: ExcellentIn the top 2% of all valid Wordle words for testing common letters.
Vowels: E, A
Unique letters: 5 of 5
Common letters: R, E, 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.