noun

humming

humming, buzzing, droning

The humming of the refrigerator is constant.

The humming of the fridge is constant.

I could hear his soft humming from the next room.

I could hear his soft humming from the next room.

the humming of ((sth.)) the low, continuous sound made by (sth.) The humming of the refrigerator is constant.

Synonyms: buzz, drone, murmur

From the verb 'to hum', which is onomatopoeic, imitating the sound.

Think of the 'hmmm' sound you make with your mouth closed. The word 'humming' sounds just like it.

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