Picky (adjective)

1. Difficult to please or satisfy, often in regards to food or taste.
2. Having high standards or a tendency to be choosy or selective in one's preferences.

Origin:

It is believed to be derived from the verb "pick", which means to select or choose.

Examples:

1. He is very picky when it comes to food, he only eats a few specific things.
2. The customers at this store are picky, they often return items that don't meet their expectations.
3. She is picky about the clothes she wears, only choosing high-end brands.
4. The editor was picky about the manuscript and asked for many revisions.
5. He is a picky reader, he only likes books that are well-written.