ψίθυρος

Etymology
If it dissimilated from *ψυθυρ-, it may belong to. On the other hand, it can be compared to. Pisani considered a relationship with 🇨🇬. Given the variants, the word is probably.

Adjective

 * 1) whispering, slanderous
 * 2) twittering, chirping

Noun

 * 1)  whisper