若い (wakai) means "young." This い-adjective describes someone or something that is not old, referring to age or appearance. It implies youthfulness. For example, "彼女はまだ若いです。" (Kanojo wa mada wakai desu.) means "She is still young."

「若い(わかい)」は年齢(ねんれい)が低い(ひくい)時(とき)に使い(つかい)ます。例(れい)：彼(かれ)は若い(わかい)です。