whispering
whis-per-ing
noun
The act of speaking very softly, often secretly or intimately.
"Their soft whispering filled the quiet room."
adjective
Making or spoken with a very soft, low sound.
"She heard a whispering voice."
Thesaurus
Synonyms: murmuring, susurrant, soft, voicelessness, susurration, whisper, rustle, rustling