1. illusory or imaginary; existing only as a product of unchecked imagination
Usage: formal
2. composed of parts from different sources; having a mixed or hybrid nature
Usage: technical

Examples

• The politician’s promises seemed chimaeric and impossible to fulfill.
• His chimaeric vision of world peace ignored practical realities.
• The scientist dismissed the theory as chimaeric speculation.
• The novel featured a chimaeric creature with features from multiple animals.
• Her chimaeric plan combined elements from several different approaches.
• The architect’s chimaeric design blended classical and modern styles.