Synonyms for Hum:
n.back, blast away, atmospherics, blast, baton, articulation, beat out, arrange, bang out, accompany. bustling, whiz, lively, whir, sounds, burr, frenzy, peak, hectic, Grand Central Station, bumble, madhouse, busy season. rumor/word/legend has it that, not that I'm aware of, I would think/imagine/hope etc., it/that depends, maybe, I dare say, presumably, reportedly, perhaps. resonate, roar, resound, pulsate. groan, thud, growl, clunk, pitch. •buzz (noun)
sing in an undertone, zoom, bum, whisper, murmur, sound, whir, vibrate, sing low, hum a tune, make a buzzing sound, sing without articulation, moan, purr, croon.
humming, thrum, seethe, buzz.
humming, rumble, grumble.
buzz, chant, throb, clatter, beat, chatter, racket, reverberation, roll, grumble, thunder, thrum, drum, drone, rattle, rumble.
croon, throb, zoom, whisper, sing low, sound, bum, purr, whir, moan, drone, bumble, thrum, murmur.
rattle, roar, resound, drum.
clunk, presumably, busy season, whisper, Grand Central Station, murmur, burr, madhouse, resound, frenzy, croon, bustling, reportedly, hectic. perhaps, lively, thud, resonate, whiz, pulsate. purr, maybe. moan, sound, peak, growl. groan. pitch. •whiz
•Other relevant words:
baton, sing low, burr, back, clunk, whisper, humming, murmur, purr, pitch, bumble, resound, growl, resonate, pulsate, whiz, frenzy, zoom, bum, vibrate, articulation, maybe, presumably, seethe, thud, arrange, accompany, lively, whir, perhaps, peak, hectic, madhouse, atmospherics, sound, bustling, groan, sounds, blast, reportedly, moan, croon, roar.