pre·ci·os·i·ty /ˌprɛʃiˈɑsəti, si-/
  過於挑剔,過於細心,過於細膩
  Pre·ci·os·i·ty n. Preciousness; something precious. [Obs.]
  Pre·ci·os·i·ty n.; pl. -ties .  Fastidious refinement, esp. in language; specif., the affected purism and sententiousness characteristic of the French précieuses of the 17th century.
     He had the fastidiousness, the preciosity, the love of archaisms, of your true decadent.    --L. Douglas.
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  preciosity
       n : the quality of being fastidious or excessively refined