Unreal (10)
'unreal' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for chimerical that I've seen before include "Fancied" , "Wild; fanciful" .)
'unreal' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for imaginary that I've seen before include "Fancied" , "Not real" , "Unreal, fanciful" , "Fictitious" , "Not based on fact, unreal" .)
'unreal' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for illusory that I've seen before include "in the imagination" , "Unreal, fanciful" , "dreamed up" , "Fanciful, imaginary (8)" , "Not real, imagined" .)