低聲細語

in a whisper / in a low voice (idiom)

low / beneath / to lower (one's head) / to let droop / to hang down / to incline

in a low voice / softly

sound / voice / tone / noise / reputation / classifier for sounds

thin or slender / finely particulate / thin and soft / fine / delicate / trifling / (of a sound) quiet / frugal

to chat with a low voice

dialect / language / speech

to tell to