whisper whispering undertone murmur murmuring whimper mutter muttering mumble sighing susurration quiet silence taciturnity quietude reticence quietus noiselessness speechlessness muteness hush unresponsiveness stillness peace calm voicelessness seriousness lull harmony contentedness happiness order agreement quiescence quietness uncommunicativeness soundlessness reserve tranquillity peacefulness tranquility cheer jubilation rejoicing joy exultation elation triumph ecstasy excitement celebration euphoria reveling gladness exhilaration merriness gleefulness revelry glee exuberance jubilance joyousness satisfaction rapture merriment merrymaking delight revelling boo jeer jeering booing disapproval unhappiness hissing derision taunt mockery ridicule sneer teasing heckling scoffing hectoring jibe hiss shouting applause adulation approval cheers encouragement praise farewell breathe mouth conceal hide grunt refrain