Nitpicking is a term, first attested in 1956, that describes the action of giving too much attention to unimportant detail.[1][2] A person who nitpicks is termed as a nitpicker.[1][3]
The terminology originates from the common act of manually removing nits (the eggs of lice, generally head lice) from another person's hair.[4]
As nitpicking inherently requires fastidious attention to detail, the term has become appropriated to describe the practice of meticulously searching for minor, even trivial errors in detail.[5]
Nitpicking has been used to describe dishonest insurers[6] and bullying employers, or even bullying family members.[7]
^Meinking, Terri; Taplin, David; Vicaria, Maureen (2011). "27. Infestations". In Schachner, Lawrence A.; Hansen, Ronald C. (eds.). Pediatric Dermatology E-Book. Elsevier. p. 1554. ISBN978-0-7234-3540-2.