Is TAINT a Wordle Word?

Yes. TAINT is a valid Wordle word.

It is on the original Wordle answer list and has not been an answer yet, so it could be a future answer.

What does TAINT mean?

/teɪnt/

2 more noun definitions

Infection; corruption; deprivation
A marker indicating that a variable is unsafe and should be subjected to additional security checks.

To contaminate or corrupt (something) with an external agent, either physically or morally.
To spoil (food) by contamination.
To be infected or corrupted; to be touched by something corrupting.

3 more verb definitions

To be affected with incipient putrefaction.“Meat soon taints in warm weather.”
To mark (a variable) as unsafe, so that operations involving it are subject to additional security checks.
To invalidate (a share capital account) by transferring profits into it.

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

Starter word rating: WeakIn the top 49% of all valid Wordle words for testing common letters.
Vowels: A, I
Unique letters: 4 of 5Repeats T
Common letters: T, A, I

Hard-mode trap: 6 valid words fit the pattern _AINT. If you reach it, you may need several guesses to find the last letter.

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.