“Hum” can be a soft, steady sound like the low buzz you hear from a fridge or the quiet singing someone does without words. It also works as a verb: when you hum, you make that sound with closed lips or a closed mouth.
In everyday life, people hum while they cook, stroll down the street, or wait for a bus—often without noticing. If the lights dim and you hear a faint hum, that’s the air-conditioner kicking in. Friends might say, “She’s humming that tune again,” when they catch you half-singing your favorite song.
Meaning & Usage Examples
Verb: “I hum when I’m nervous.”
Noun: “There’s a low hum from the computer.”
Both describe a smooth, continuous sound.
Common Context
You’ll hear “hum” in conversations about music (“He hummed the melody”), machines (“The server room has a constant hum”), or city life (“Traffic hum outside the window”). It’s short, easy, and instantly paints the picture of a gentle, ongoing noise.
Is humming only something people do?
No—machines, insects, and even entire buildings can hum.
Does “hum” ever mean silence?
No, it always implies a quiet, steady sound, never complete silence.
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