Answer:

droners

Answer	Crossword Clue
DRONERS	They go on and on
DRONERS	Tiresome speakers
DRONERS	Monotonous speakers.

DRONERS	Beetles in flight.
DRONERS	Dull, monotonous speakers
DRONERS	Bumblebees
DRONERS	Steady hum producers
DRONERS	Dull lecturers

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.