Utopian -- (an idealistic (but usually impractical) social reformer; "a Utopian believes in the ultimate perfectibility of man")
Overview of adj utopian
The adj utopian has 2 senses
utopian, Utopian -- (of or pertaining to or resembling a utopia; "a Utopian novel")
utopian -- (characterized by or aspiring to impracticable perfection; "the dim utopian future"; "utopian idealists"; "recognized the utopian nature of his hopes")
(Sound)
