A pedant goes beyond necessary detail, often missing the bigger picture or main point. While editing my essay, I was such a pedant that I focused on comma placement rather than the argument.
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Negative Connotation
Being called a pedant usually suggests annoyance; it's not typically a compliment. She called me a pedant when I corrected her pronunciation again.
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Not Just Academics
'Pedant' can refer to anyone overly concerned with details, not just in learning. He's such a pedant about his lawn, plucking out every tiny weed.