Is FIVER a Wordle Word?

Yes. FIVER is a valid Wordle word.

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

What does FIVER mean?

A banknote with a value of five units of currency.“Do you have a fiver I could borrow? I can pay you back tomorrow.”
(by extension) The value in money that this represents.“I bought the chocolates; they were only a fiver.”
A clenched fist.

3 more noun definitions

A mathematical puzzle played on a 5 × 5 grid.
A Zaydi Shiite Muslim, who disagrees with the majority of Shiites on the identity of the Fifth Imam.
A person who gives five percent of their income or five hours a week of their time to charity (a reduction of ten percent tithing).

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

Starter word rating: AverageIn the top 40% of all valid Wordle words for testing common letters.
Vowels: I, E
Unique letters: 5 of 5
Common letters: I, E, R

Hard-mode trap: 11 valid words fit the pattern _IVER. 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.