pernickety
adjective/pəˈnɪkəti/
/pərˈnɪkəti/
(especially British English) (North American English usually persnickety)
(informal, disapproving)- worrying too much about details that are not important; showing this synonym fussyWord Originearly 19th cent. (originally Scots): of unknown origin.
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pernickety