whisperகுசுகுசுkucukucu(kusukusu)(6 intr)speak softly, without full voice; speak under o's breath; speak quietly or privately, as when imparting gossip, slander, or intrigue; speak softly without vibration of the vocal cords
Usage:
சின்னக் குரலில் குசுகுசுத்துக் கொண்டிருந்தார்கள்ciṉṉak kuralil kucukucuttuk koṇṭiruntārkaḷ
cinna koralle kusukusuttukkiṭṭirundaanga
They were whispering together.