whisper

nouns

speaking softly without vibration of the vocal cords
susurration, voicelessness, whisper, whispering
a light noise, like the noise of silk clothing or leaves blowing in the wind
rustle, rustling, whisper, whispering

verbs

speak softly; in a low voice
whisper
is derived from
whisperer
is derived from
whispering
antonym
shout
is a type of (narrower)
express in speech
"She talks a lot of nonsense"; "This depressed patient does not verbalize"
mouth, speak, talk, utter, verbalise, verbalize