Is SIGHS a Wordle Word?

Yes. SIGHS 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 SIGHS mean?

/saɪz/

A deep, prolonged audible inhale and exhale of breath; as when fatigued, frustrated, grieved, or relieved; the act of sighing.
Figuratively, a manifestation of grief; a lament.
A person who is bored.

To inhale a larger quantity of air than usual, and immediately expel it; to make a deep single audible respiration, especially as the result or involuntary expression of fatigue, exhaustion, grief, sorrow, frustration, or the like.“He sighed over the lost opportunity.”
To lament; to grieve.
To utter sighs over; to lament or mourn over.

4 more verb definitions

To experience an emotion associated with sighing.“He silently sighed for his lost youth.”
To make a sound like sighing.
To exhale (the breath) in sighs.“She sighed a sigh that was nearly a groan.”
To express by sighs; to utter in or with sighs.“"I guess I have no choice," she sighed.”

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

Starter word rating: WeakIn the top 92% of all valid Wordle words for testing common letters.
Vowels: I
Unique letters: 4 of 5Repeats S
Common letters: I

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.