(w)

(hēng) to groan; to snort; to hum; to croon; humph!

哼儿哈儿 (w)

(hēngrhār) to hem and haw (loanword)

哼哧 (w)

(hēngchī) to puff hard (e.g. after running)

哼唧 (w)

(hēngji) whisper

哼唱 (w)

(hēngchàng) to hum; to croon

哼声 (w)

(hēngshēng) hum