Is MUNIA a Wordle Word?

Yes. MUNIA is a valid Wordle word.

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

What does MUNIA mean?

Any of certain estrildid finches of the genera Lonchura (most instances) and Amandava (two species).

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

Starter word rating: WeakIn the top 42% of all valid Wordle words for testing common letters.
Vowels: U, I, A
Unique letters: 5 of 5
Common letters: I, 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.