Visionary (7)
'visionary' is the definition.
(dreamer is a kind of visionary)
This is all the clue.
(Other definitions for dreamer that I've seen before include "One lost in abstraction" , "One fantasising" , "Mitty type" , "One who tends to live in an unreal world" , "stargazer" .)
'visionary' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for utopian that I've seen before include "Fantastic" , "Just perfect as in Thomas More's fictional country" , "I put on a show of perfect kind" , "Citizens of Thomas More's perfect country" , "Of supposed perfection" .)
'visionary' is the definition.
(synonyms)
This is all the clue.
(Other definitions for seer that I've seen before include "Regard with respect" , "One has unusual foresight" , "Clairvoyant, visionary" , "Oracle or prophet" , "One divines the future" .)
'visionary' is the definition.
(synonyms)
This is all the clue.
(Other definitions for idealistic that I've seen before include "Impracticable" , "Striving for perfection" , "Naively impractical" , "High-minded - italicised (anag)" , "Utopian" .)
'visionary?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for optic that I've seen before include "Pub measure" , "Device for measuring gin etc" , "Spirit dispenser - of the eye" , "Bar measure" , "What could measure the spirits" .)