bubbleheaded

comparative more bubbleheaded · superlative most bubbleheaded

1. informalStupid; vacuous.

   1 more example

   Then at the last minute Harris was brought aboard as Dr. Zachary Smith, initially an authentic, lip-curling nogoodnik who, it was presently discovered, could be better used for laughs played off Mumy and a sober-sided robot (“You bubbleheaded booby,” sneers Harris. “That does not compute,” returns the robot dryly).

   1966 September 24, TV Guide, Radnor, Pa., page 25, column 1