airhead Crossword Clue Answer BIMBO Answer BIRDBRAIN Answer BOOB Answer DITZ Answer DODO Answer DOLT Answer DOPE Answer DUMBBELL Answer DUNCE Answer LOON Answer NINNY Answer NITWIT Answer SAP Answer SCHMO Answer SIMP Answer SPACECADET Answer TWIT Answer YOYO This clue has appeared with 18 different answers across different puzzles.