wonk

/wɑŋk/
noun
  1. A person who takes an excessive interest in the details of a particular subject, especially politics or policy.
    • The debate was full of wonks arguing about tax rates.
    • My brother is a computer wonk who spends all his time coding.
    • The senator is a policy wonk who loves reading long reports.
  2. A studious or hardworking person, often one who is overly serious about academics.
    • The library is full of wonks studying for final exams.
    • In high school, she was a total wonk and always had her nose in a book.
    • Don't be such a wonk — come outside and play basketball with us.
Antonyms
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