Is LOSES a Wordle Word?

Yes. LOSES 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 LOSES mean?

To cause (something) to cease to be in one's possession or capability due to unfortunate or unknown circumstances, events or reasons.“He lost his hearing in the explosion.”
To wander from; to miss, so as not to be able to find; to go astray from.“I lost my way in the forest.”
To fail to win (a game, competition, trial, etc).“We lost the football match.”

8 more verb definitions

To be unable to follow or trace (somebody or something) any longer.“Mission control lost the satellite as its signal died down.”
To cause (somebody) to be unable to follow or trace one any longer.“We managed to lose our pursuers in the forest.”
To cease exhibiting; to overcome (a behavior or emotion).
To shed, remove, discard, or eliminate.“When we get into the building, please lose the hat.”
Of a clock, to run slower than expected.“It's already 5:30? My watch must have lost a few minutes.”
(ditransitive) To cause (someone) the loss of something; to deprive of.
To fail to catch with the mind or senses; to miss.“I lost a part of what he said.”
To cause to part with; to deprive of.

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

Starter word rating: AverageIn the top 33% of all valid Wordle words for testing common letters.
Vowels: O, E
Unique letters: 4 of 5Repeats S
Common letters: L, O, E

Hard-mode trap: 12 valid words fit the pattern LO_ES. 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.