「安い」 (Yasui) is an i-adjective meaning 'cheap' or 'inexpensive'. It describes something that has a low price, making it affordable. It can also imply that something is easily done or acquired without much effort or cost.

「安(やす)い」は「cheap, inexpensive」という「意味(いみ)」のい「形容詞(けいようし)」です。「値段(ねだん)」の「安(やす)さ」を「表(あらわ)します」。