IPA: /ˈfɪnɪkəl/
KK: /ˈfɪnɪkəl/
The quality of being very particular or hard to please, especially about details in appearance or behavior.
Her finicalness about her clothing made it difficult for her to find something to wear for the party.
Finicalness → It is formed from "finical" (from the Latin root "finis", meaning end or limit, combined with the suffix "-ical", meaning pertaining to) and the suffix "-ness" (meaning the state or quality of). The word "finicalness" refers to the quality of being finical, which means being excessively particular or fussy about details.
Think of someone being overly concerned with the 'end' or 'limit' of things ('finis') — that's why finicalness means being very particular about details.