chimerical

adjectives

being or relating to or like a chimera
"his Utopia is not as chimeric commonwealth but a practical improvement on what already exists"- Douglas Bush
is derived from
pertains to
produced by a wildly fanciful imagination
"his Utopia is not a chimerical commonwealth but a practical improvement on what already exists"- Douglas Bush
is derived from
is similar to
not realistic
"unrealistic expectations"; "prices at unrealistic high levels"