1. in a dull, monotonous manner; with a continuous, humming sound
Usage: formed from the adjective 'droning'

Examples

• The professor spoke droningly about the history of medieval taxation.
• He read the instructions droningly, putting everyone to sleep.
• The bees hummed droningly in the garden all afternoon.
• She delivered the speech droningly, without any variation in tone.
• The engine ran droningly in the background throughout the meeting.