Showing one's intelligence more than is necessary.
David Pearce could be pedantic if he so chose.
someone who does things "by the book" to an extent that it overrides intuition
that's one bad teacher, she's so pedantic
Mark: You can't place two cards down in uno!
Toby: Stop being pedantical dude.
A tendency toward involuntary discovery of evidence suggesting widespread ignorance and/or ineptitude, esp. with regard to linguistic communication.
There were days when Lisa's instinctive pedantry threatened to overwhelm her.
K got a lot of pedanter from pedants for subtle grammatical errors in her emails
When two assholes try to out-asshole each other in an Internet bitch fight.
"If your statement was never supposed to be read as anything more than a synonym for 'Russia is not good and not our friend' then sorry for being comparably pedantic, I guess.