Finicky (adjective)

1. Very difficult to please; excessively concerned with details and minor points.
2. Fastidious, demanding, or fussy.

Origin:

Early 19th century: from finick "to pay attention to trifles" + -y.

Examples:

1. He was known for being finicky about his food.
2. She was finicky about her clothes and would only wear certain brands.
3. The finicky customer returned the dish because it wasn't cooked to his liking.
4. He was finicky about how his room was kept.
5. The finicky cat would only eat certain types of food.