didact

/ˈdaɪdækt/
noun
  1. A person who is fond of teaching or instructing others, often in a formal or moralizing way.
    • As a didact, she couldn't help but explain the history behind every painting in the museum.
    • He was known as a bit of a didact, always ready to lecture his friends on proper grammar.
    • The old professor was a born didact, always turning every conversation into a lesson.
Antonyms
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