nitpick

/ˈnɪt.pɪk/

Etymology

From nit + pick, originally referring to literally removing invisibly tiny louse eggs by hand.

verb

  1. To correct insignificant mistakes or find fault in unimportant details.“Someone will invariably nitpick about any spelling error posted to the forums.”
  2. To pick nits (lice eggs) from someone’s hair.
  3. To pick nits (lice eggs) from someone’s hair. I nitpicked his hair.; I nitpicked his hair.