Is TINNY a Wordle Word?

Yes. TINNY is a valid Wordle word.

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

What does TINNY mean?

Of or pertaining to or resembling tin.“The object had a tinny appearance.”
Pertaining to the thinness and cheapness of tin or similar-looking metals, in contrast to a heavier, more valuable metal.“The shop was filled with tinny tourist geegaws.”
Pertaining to a thin, unpleasant sound recalling that of tin being rapped.“The piano was not simply out of tune, but had become downright tinny.”

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

Starter word rating: WeakIn the top 80% of all valid Wordle words for testing common letters.
Vowels: I
Unique letters: 4 of 5Repeats N
Common letters: T, I

Hard-mode trap: 9 valid words fit the pattern _INNY. 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.