How is the word "picky" used in English? one sample.

 The word picky is an informal adjective that means fussy, selective, or hard to please (Japanese: 「好みがうるさい」「こだわりが強い」「選り好みする」).

Here is one sample sentence showing how it is commonly used:

"My younger brother is a extremely picky eater, so he only eats chicken nuggets and fries."

（弟は極度の**好き嫌い（選り好み）**なので、チキンナゲットとフライドポテトしか食べません。）

Quick Note

It is most frequently paired with the word eater (a picky eater = 好き嫌いが多い人), but it can also describe someone who is selective about clothes, partners, or details in general (e.g., "She is very picky about her coffee.").