Is MATED a Wordle Word?

Yes. MATED is a valid Wordle word.

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

Past-tense words ending in ED are almost never chosen as Wordle answers.

What does MATED mean?

To put the king of an opponent into checkmate.“That jerk checkmated me in four moves!”
(by extension) To place in a losing situation that has no escape.

To match, fit together without space between.“The pieces of the puzzle mate perfectly.”
To copulate.
To pair in order to raise offspring

7 more verb definitions

To arrange in matched pairs.
To introduce (animals) together for the purpose of breeding.
(of an animal) To copulate with.
To marry; to match (a person).
To match oneself against; to oppose as equal; to compete with.
To fit (objects) together without space between.
To move (a space shuttle orbiter) onto the back of an aircraft that can carry it.

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

Starter word rating: AverageIn the top 15% of all valid Wordle words for testing common letters.
Vowels: A, E
Unique letters: 5 of 5
Common letters: A, T, E

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