a. Chimerical. [ 1913 Webster ]
a. Merely imaginary; fanciful; fantastic; wildly or vainly conceived; having, or capable of having, no existence except in thought; as, chimerical projects.
Syn. -- Imaginary; fanciful; fantastic; wild; unfounded; vain; deceitful; delusive. [ 1913 Webster ]
adv. Wildy; vainly; fancifully. [ 1913 Webster ]