pedantic
definition
excessively concerned with minor details or rules; overly academic
example
His pedantic attention to detail made it difficult for the team to focus on the big picture.
synonyms
nitpickyfastidiousmeticulous
word origin — The word 'pedantic' originated in the early 17th century from the French 'pédant', meaning 'a schoolmaster', which in turn comes from the Italian 'pedante', derived from 'pedare', meaning 'to teach'.