drone Synonyms

hum rumble idler purr monotone poke dawdler whine slacker parasite whir murmur droning buzz bourdon loafer laggard trailer pilotless aircraft lagger layabout junketeer basso continuo jingle-jangle autogiro gavage delta wing killer bee goldbrick foot soldier autogyro airplane prevue truant tinnitus thrumming thrum susurration strum straggler sponger ventriloquize vibrate windrow whispering whirring welcher wastrel waster wasp