Jerry-built is a term used to describe something that has been constructed in a hasty or shoddy manner, typically using cheap materials. Antonyms for jerry-built could include terms like sturdy, well-built, robust, durable, and reliable. These words all suggest something that has been created with care and attention to ensure it can withstand wear and tear over time. Other antonyms could include phrases like "expertly crafted," "high-quality," and "thoughtfully designed," which all emphasize the idea that the object in question has been created with skill and an eye for detail. Ultimately, antonyms for jerry-built speak to the importance of quality and craftsmanship in creating objects that can last and serve their intended purpose effectively.