[{"Bold_text": "verb (used without object)", "List Items": ["to make a low, continuous, droning sound.", "to give forth an indistinct sound of mingled voices or noises.", "to utter an indistinct sound in hesitation, embarrassment, dissatisfaction, etc.; hem.", "to sing with closed lips, without articulating words.", "to be in a state of busy activity:The household hummed in preparation for the wedding.Synonyms: buzz , bustle", "British Slang.to have a bad odor, as of stale perspiration."]}, {"Bold_text": "verb (used with object)", "List Items": ["to sound, sing, or utter by humming:to hum a tune.", "to bring, put, etc., by humming:to hum a child to sleep."]}, {"Bold_text": "noun", "List Items": ["the act or sound of humming; an inarticulate or indistinct murmur; hem.", "Audio.an unwanted low-frequency sound caused by power-line frequencies in any audio component."]}, {"Bold_text": "interjection", "List Items": ["(an inarticulate sound uttered in contemplation, hesitation, dissatisfaction, doubt, etc.)"]}]