Noun

1. whisper, whispering, susurration, voicelessness, speaking, speech production

usage: speaking softly without vibration of the vocal cords

2. rustle, rustling, whisper, whispering, noise

usage: a light noise, like the noise of silk clothing or leaves blowing in the wind

Verb

1. whisper, talk, speak, utter, mouth, verbalize, verbalise

usage: speak softly; in a low voice

See also: whisper (Dictionary)