- chimeric, chimerical, chimeral - being or relating to or like a chimera; "his Utopia is not as chimeric commonwealth but a practical improvement on what already exists"- Doublas Bush
- chimerical - produced by a wildly fanciful imagination; "his Utopia is not a chimerical commonwealth but a practical improvement on what already exists"- Douglas Bush
Antonym: realistic (indirect, via unrealistic)