simple past tense and past participle of hum

A hummed tune, i.e. created orally with lips closed. / An often indistinct sound resembling human humming. / Busy activity, like the buzz of a beehive. / (UK, slang) Unpleasant odour.

(intransitive) To make a sound from the vocal chords without pronouncing any real words, with one's lips closed. / (transitive) To express by humming.

Synonym of hmm: a noise indicating thought, consideration, &c. / Synonym of um: a noise indicating doubt, uncertainty, &c.

present participle of hum

Making a hum sound. / (archaic) Of ale or beer: very strong.

The sound of something that hums; a hum.

plural of hum

Third-person singular simple present indicative form of hum

plural of humming