hum

American  

[huhm] / hʌm /

verb (used without object)

hummed, humming

1. to make a low, continuous, droning sound.

2. to give forth an indistinct sound of mingled voices or noises.

3. to utter an indistinct sound in hesitation, embarrassment, dissatisfaction, etc.; hem.

4. to sing with closed lips, without articulating words.

5. to be in a state of busy activity.

   The household hummed in preparation for the wedding.

   Synonyms:

   buzz, bustle

6. British Slang. to have a bad odor, as of stale perspiration.

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verb (used with object)

hummed, humming

1. to sound, sing, or utter by humming.

   to hum a tune.

2. to bring, put, etc., by humming.

   to hum a child to sleep.

noun

1. the act or sound of humming; an inarticulate or indistinct murmur; hem.

2. Audio. an unwanted low-frequency sound caused by power-line frequencies in any audio component.

interjection

1. (an inarticulate sound uttered in contemplation, hesitation, dissatisfaction, doubt, etc.)

hum British  

/ hʌm /

verb

1. (intr) to make a low continuous vibrating sound like that of a prolonged m

2. (intr) (of a person) to sing with the lips closed

3. (intr) to utter an indistinct sound, as in hesitation; hem

4. informal (intr) to be in a state of feverish activity

5. slang (intr) to smell unpleasant

6. slang (intr) to scrounge

7. See hem 2

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noun

1. a low continuous murmuring sound

2. electronics an undesired low-frequency noise in the output of an amplifier or receiver, esp one caused by the power supply

3. slang a scrounger; cadger

4. slang an unpleasant odour

interjection

1. an indistinct sound of hesitation, embarrassment, etc; hem

Other Word Forms

• hummer noun
• underhum noun

Etymology

Origin of hum

1300–50; Middle English; ultimately imitative; cognate with German hummen to hum; humblebee

Example Sentences

For this friendly, the gentle hum of a few thousand conversations sounded more like the first morning of a Test match at Lord's.

From BBC • Mar. 31, 2026

Wall Street jitters about the Iran war spilled over Tuesday into a vital part of U.S. financial markets that typically hum along without a hitch.

From MarketWatch • Mar. 24, 2026

As I headed home, the hum of Lankershim and the neon blur of bars couldn’t drown out the quiet, unmistakable voice inside me whispering, “I think I just met my future husband.”

From Los Angeles Times • Mar. 13, 2026

I’m a regular at my neighborhood Yemeni coffee shop, where the soft hum and spicy scents of bubbling, fresh chai greet me.

From Salon • Jan. 25, 2026

I told myself I needed time to think, but in that time the boat rounded the island as before, and its hum began to recede.

From "Flying Through Water" by Mamle Wolo

Related Words

• croon
• moan
• mumble
• murmur
• purr
• sing
• strum
• throb
• trill
• warble
• whisper