Answer: whippersnappers

AnswerCrossword Clue
WHIPPERSNAPPERS

Presumptuous characters.

WHIPPERSNAPPERS

Upstarts.

WHIPPERSNAPPERS

Brash upstarts

WHIPPERSNAPPERS
Impertinent youngsters
WHIPPERSNAPPERS
Ones who are too big for their britches
WHIPPERSNAPPERSPresumptuous sorts
WHIPPERSNAPPERSUpstarts