IPA: /prɛˈsiːəsɪti/
KK: /prɛˈsiːəsɪti/
A quality of being overly careful or refined, especially in language or style, often to the point of being affected or unnatural.
The preciosity of her writing made it difficult for some readers to connect with the story.
Preciosity is formed from "precisus" (meaning cut off or separated) and the suffix "-ity" (meaning the state or quality of). The word refers to the state of being precious or of high value, often with an implication of refinement or delicacy.
Think of something that is 'cut off' or 'separated' to be special or 'precious' — that's why preciosity refers to the quality of being precious.