Synonyms for Drone:

n.

airplane, balloon, aeroplane, noise, airbus, biplane, Air Force One, aircraft, b-52, airship, vibration, airliner. buck, parasite, boar, bull, alpha male, cockerel, Billy Goat, dog, bullock, boy. pitch, thud, clunk. pencil pusher, pink-collar, bottom feeder, workhorse, flunky. buzz (noun)
fizz.
rumble (noun)
drum, hum, thrum, chant, grumble, beat, throb, roll, rattle, clatter, chatter, buzz, thunder, rumble, racket, reverberation.

v.

buzz (verb)
reverberate.
drone (verb)
chant, thrum.
rumble (verb)
reverberate.

Other synonyms:

fizz, putter, Do-little, clunk, slugabed, pencil pusher, moan, growl. groan, thud, flunky. babble, gurgle. cluck. pitch.

Usage examples for drone

  1. In the silence, the drone of feeding poultry came from the back- yard, and the sleepy breathing of the big collie on the steps sounded plainly through the room. – A Breath of Prairie and other stories by Will Lillibridge
  2. She was wont to hear the mocking- bird pour forth his thrilling ecstasy of song, the wild bee drone and in the distance the muffled booming thunder of the herds of buffalo. – The Story of Old Fort Loudon by Charles Egbert Craddock