ھ م سh-m-s
(ض) هَمَسَ يَهْمِسُ هَمْسًاhamasa yahmisu hamsan: to speak very softly; to walk stealthily. (This verb is not used in the Quran.)
هَمْسٌhams (verbal noun, maṣdar, also a noun, ism dhāt): a very faint sound, a soft footfall, a whisper. Only once in the Quran: ﴿وَخَشَعَتِ الْاَصْوَاتُ لِلرَّحْمٰنِ فَلَا تَسْمَعُ اِلَّا هَمْسًا﴾ (Ṭā Hā 20:108)