hum - definition, thesaurus and related words from WordNet-Online

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Noun hum has 3 senses

busyness, hum - the state of being or appearing to be actively engaged in an activity; "they manifested all the busyness of a pack of beavers"; "there is a constant hum of military preparation"
--₁ is a kind of action, activity, activeness
Harkat-ul-Mujahidin, HUM, Harkat ul-Ansar, HUA, Harkat ul-Mujahedeen, Al Faran, Movement of Holy Warriors - an Islamic fundamentalist group in Pakistan that fought the Soviet Union in Afghanistan in the 1980s; now operates as a terrorist organization primarily in Kashmir and seeks Kashmir's accession by Pakistan
--₂ is a kind of terrorist organization, terrorist group, foreign terrorist organization, FTO
hum, humming - a humming noise; "the hum of distant traffic"
--₃ is a kind of noise

Derived forms: verb hum₂, verb hum₃, verb hum₄

Verb hum has 4 senses

hum - sing with closed lips; "She hummed a melody"
--₁ is one way to sing

Derived forms: noun hummer₁, noun humming₂
Sample sentences:
They will hum the duet
Sam and Sue hum
hum, buzz, seethe - be noisy with activity; "This office is buzzing with activity"
--₂ is one way to be

Derived forms: noun hum₃, noun humming₁
Sample sentences:
Cars hum in the streets
The streets hum with cars
hum, thrum - sound with a monotonous hum
--₃ is one way to sound, go

Derived form: noun hum₃
Sample sentences:
Something ----s
Somebody ----s
Somebody ----s something
hum - make a low continuous sound; "The refrigerator is humming"
--₄ is one way to make noise, resound, noise

Derived forms: noun hum₃, noun humming₁
Sample sentence:
Something ----s