Filed from 2 published puzzles

DINGALING

Set to 2 different clues across 2 published puzzles, most often “Doofus” — The New York Times, Tuesday, 14 August 2007.

9 letters

Every clue on record, most used first

Doofusonce
The New York Times — Tuesday, 14 August 2007
''My _____'' (1972 hit)once
The New York Times — Saturday, 29 January 1994

Other answers to these clues

ASS3 letters
BIRDBRAIN9 letters
BOOB4 letters
BOZO4 letters
CLOD4 letters
DOLT4 letters
DUMBBELL8 letters
IDIOT5 letters
LOSER5 letters
NERD4 letters
NINCOMPOOP10 letters
NOODLEHEAD10 letters