Formal:
* "The renowned chef was known for her fastidious attention to detail, ensuring each dish was perfectly balanced in flavor and presentation."
* "His fastidious cleaning habits made him a popular roommate, as he kept the apartment spotless."
* "The museum curator meticulously preserved the artifacts, demonstrating a fastidious commitment to historical accuracy."
Informal:
* "My friend is so fastidious about her clothes that she has a whole system for organizing her wardrobe."
* "He's a fastidious eater, so be prepared for a lot of picky requests at the restaurant."
* "She's a fastidious reader, only enjoying books that are well-written and thought-provoking."
Negative connotation:
* "His fastidious nature sometimes made him seem overly critical and difficult to please."
* "Her fastidiousness about cleanliness was starting to feel like an obsession."
The meaning of "fastidious" can vary depending on the context. It can be used to describe someone who is meticulous, attentive to detail, or even overly critical.