Is CUTER a Wordle Word?

Yes. CUTER is a valid Wordle word.

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

What does CUTER mean?

Possessing physical features, behaviors, personality traits or other properties that are mainly attributed to infants and small or cuddly animals; e.g. fair, dainty, round, and soft physical features, disproportionately large eyes and head, playfulness, fragility, helplessness, curiosity or shyness, innocence, affectionate behavior.“Our reaction to cute attributes is understood as the way nature ensures mammals care for their young.”
Generally, attractive or pleasing, especially in a youthful, dainty, quaint or fun-spirited way.“Let's go to the mall and look for cute girls.”
Affected or contrived to charm; mincingly clever; precious; cutesy.“Don't get cute with me, boy!”

1 more adjective definition

Mentally keen or discerning (See also acute)“Cute trick, but can you do it consistently?”

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

Starter word rating: GoodIn the top 8% of all valid Wordle words for testing common letters.
Vowels: U, E
Unique letters: 5 of 5
Common letters: T, E, R

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.