nitwit russian

• болва́н

  fool, blockhead, dope, nitwit

  block of wood, hat block, dummy

• бе́столочь

  blockhead, dolt, muddle-headed person, nitwit

  confusion, muddle, disorder, nonsense

• дурале́й

  booby, nincompoop, nitwit

Examples

• Ну ты и дуралей, опять всё перепутал

  You really are a nitwit—you’ve mixed everything up again.