Like a perfect world (7)
I believe the answer is:
utopian
'like a perfect world' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for utopian that I've seen before include "Thomas More-ish?" , "More work was literally so" , "Of an ideal existence" , "Of ideal perfection (as More's state)" , "Fantastic" .)