Here are a few examples of parallel adjectives:
* "The house was old and crumbling." Here, "old" and "crumbling" both describe the state of the house, making them parallel adjectives.
* "The sky was vast and empty." Both "vast" and "empty" describe the appearance of the sky.
* "The dog was playful, energetic, and friendly." All three adjectives describe the dog's personality.
Parallel adjectives help to create a sense of rhythm and clarity in writing, and they can be a powerful tool for conveying meaning.