一絲不苟 (jat1 si1 bat1 gau2) — not be the least bit negligent; be scrupulous about every detail; be conscientious and meticulous in Cantonese
jatˉ¹一siˉ¹絲batˉ¹不gauˊ²苟简 一丝不苟
Mandarin Pinyin: yi1 si1 bu4 gou3
Meaning of 一絲不苟
nounnot be the least bit negligent; be scrupulous about every detail; be conscientious and meticulous