Is VAILS a Wordle Word?

Yes. VAILS 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 VAILS mean?

Profit; return; proceeds.
(chiefly in the plural) Money given to servants by visitors; a gratuity; also vale.

To pay homage, bow, submit, defer (to someone or something); to yield, give way (to something).
To remove as a sign of deference, as a hat.
To lower, let fall; to allow or cause to sink.

1 more verb definition

(vexillology) (current, operational) To lower or "dip" a carried flag or banner in a salute by a forward reducing of the angle of the pike/flagstaff with respect to the ground; in extreme instances, as when saluting a monarch, both the banner and the finial of the pike are allowed to rest upon the ground.

Something hung up or spread out to hide or protect the face, or hide an object from view; usually of gauze, crepe, or similar diaphanous material.
A cover; disguise; a mask; a pretense.
The calyptra of mosses.

5 more noun definitions

A membrane connecting the margin of the pileus of a mushroom with the stalk; a velum.
A covering for a person or thing; as, a caul (especially over the head)“a nun's veil”
Velum (A circular membrane round the cap of medusa)
A thin layer of tissue which is attached to or covers a mushroom.
An obscuration of the clearness of the tones in pronunciation.

To dress in, or decorate with, a veil.
To conceal as with a veil.“The forest fire was veiled by smoke, but I could hear it clearly.”

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

Starter word rating: AverageIn the top 35% of all valid Wordle words for testing common letters.
Vowels: A, I
Unique letters: 5 of 5
Common letters: A, I, L

Hard-mode trap: 13 valid words fit the pattern _AILS. 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.