「新しい」(atarashii) is an い-adjective meaning "new." It describes something that is recently made, acquired, or modern. For example, if you buy a new book, you would say "新しい本" (atarashii hon).

「新しい」(あたらしい)は「新しい状態」という意味のい形容詞です。例：「新しい靴。」