Is GIBER a Wordle Word?

Yes. GIBER is a valid Wordle word.

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

What does GIBER mean?

One who utters gibes.“Come, come, you are well understood to be a perfecter / giber for the table than a necessary bencher in the / Capitol.”

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

Starter word rating: AverageIn the top 26% of all valid Wordle words for testing common letters.
Vowels: I, E
Unique letters: 5 of 5
Common letters: I, 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.