n. 25B6; noun
his voice was a murmur : WHISPER, undertone, mutter, mumble.
there were murmurs in Tory ranks : COMPLAINT, grumble, grouse; informal gripe, moan.
the murmur of bees : HUM, humming, buzz, buzzing, thrum, thrumming, drone; sigh, rustle; poetic/literary susurration, murmuration.
25B6; verb
he heard them murmuring in the hall : MUTTER, mumble, whisper, talk under one's breath, speak softly.
no one murmured at the delay : COMPLAIN, mutter, grumble, grouse; informal gripe, moan.
the wind was murmuring through the trees : RUSTLE, sigh; burble, purl; poetic/literary whisper.