Is MELTS a Wordle Word?

Yes. MELTS is a valid Wordle word.

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

Plurals ending in S are almost never chosen as Wordle answers.

What does MELTS mean?

3 more noun definitions

A melt sandwich.
A wax-based substance for use in an oil burner as an alternative to mixing oils and water.
An idiot.

To change (or to be changed) from a solid state to a liquid state, usually by a gradual heat.“I melted butter to make a cake.”
To dissolve, disperse, vanish.“His troubles melted away.”
To soften, as by a warming or kindly influence; to relax; to render gentle or susceptible to mild influences; sometimes, in a bad sense, to take away the firmness of; to weaken.

3 more verb definitions

To be discouraged.
To be emotionally softened or touched.“She melted when she saw the romantic message in the Valentine's Day card.”
To be very hot and sweat profusely.“I need shade! I'm melting!”

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

Starter word rating: AverageIn the top 16% of all valid Wordle words for testing common letters.
Vowels: E
Unique letters: 5 of 5
Common letters: E, L, T

Hard-mode trap: 10 valid words fit the pattern _ELTS. 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.