IPA: /fæˈstɪdiəsnəs/
KK: /fæˈstɪdɪəsnəs/
The quality of being very attentive to detail and hard to please.
Her fastidiousness made her an excellent editor, as she caught every small mistake.
Fastidiousness → It is formed from "fastidious" (from Latin *fastidiosus*, meaning difficult to please or disdainful) and the suffix "-ness" (meaning the state or quality of). The word "fastidiousness" refers to the quality of being very attentive to detail and hard to please.
Think of someone who is 'difficult to please' ('fastidious') and the '-ness' indicating a state or quality. This helps you remember that fastidiousness is about being very particular and meticulous.