bubbleheaded

/ˈbʌbəlˌhɛdɪd/
adjective
  1. Foolish, silly, or lacking intelligence; not serious or thoughtful.
    • His bubbleheaded comments during the meeting made everyone roll their eyes.
    • Don't be so bubbleheaded; you need to think before you spend all your money.
    • She played a bubbleheaded character in the comedy who always forgot her lines.
Antonyms
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