murmur, mutter, whisper

名詞 whisper:

1. speaking softly without vibration of the vocal cords
   同義詞：whispering, susurration, voicelessness
2. the light noise like the noise of silk clothing or leaves blowing in the wind
   同義詞：rustle, rustling, whispering

動(dòng)詞 whisper:

1. speak softly; in a low voice

1. She said it in a whisper, so I didn't hear.
   她是悄聲說(shuō)的，所以我沒(méi)有聽(tīng)見(jiàn)。
2. The wind was whispering in the roof.
   屋頂上風(fēng)聲颯颯。
3. The children were whispering in the corner.
   孩子們正在角落里低聲耳語(yǔ)。

whis.per

n.（名詞）
Soft speech produced without full voice.
低語(yǔ)：壓低嗓音說(shuō)出的輕聲話語(yǔ)
Something uttered very softly.
耳語(yǔ)輕聲細(xì)語(yǔ)：非常輕聲溫柔地說(shuō)出的話
A secretly or surreptitiously expressed belief, rumor, or hint:
耳語(yǔ)，私語(yǔ)：秘密或私下里表達(dá)出的看法、謠言或暗示：
例句：
whispers of scandal.
關(guān)于丑聞的竊竊私語(yǔ)

A low rustling sound:
低低的颯颯聲：
例句：
the whisper of wind in the pines.
風(fēng)吹過(guò)松林間颯颯作響

v.（動(dòng)詞）
whis.pered,whis.per.ing,whis.pers
v.intr.（不及物動(dòng)詞）
To speak softly.
低聲說(shuō)
To speak quietly and privately, as by way of gossip, slander, or intrigue.
私語(yǔ)：暗中秘密地及私下里說(shuō)，如通過(guò)說(shuō)閑話、誹謗或搞陰謀的方式
To make a soft rustling sound.
發(fā)颯颯聲，產(chǎn)生低聲颯颯作響的聲音
v.tr.（及物動(dòng)詞）
To utter very softly.
耳語(yǔ)
To say or tell privately or secretly.
私語(yǔ)：私下里或秘密地說(shuō)

來(lái)源：
From Middle English whisperen [to whisper]
源自 中古英語(yǔ) whisperen [說(shuō)悄悄話，耳語(yǔ)]
from Old English hwisprian
源自 古英語(yǔ) hwisprian

【引伸】
whis.perer
n.（名詞）
whis.pery
adj.（形容詞）