Answer:

dullards

Answer	Crossword Clue
DULLARDS	Dunderheads.
DULLARDS	Simpletons.
DULLARDS	Blockheads

DULLARDS	Intellectuals' opposites
DULLARDS	Numbskulls
DULLARDS	They're not very bright
DULLARDS	Nitwits

Crossword

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