sciolist

/ˈsaɪəlɪst/
noun
  1. A person who pretends to be knowledgeable but has only superficial understanding.
    • The professor dismissed the article as the work of a sciolist.
    • Don't be a sciolist; study a topic deeply before speaking about it.
    • The talk show host was a sciolist, confidently giving wrong advice.
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