Webster’s Revised Unabridged Dictionary · 1913
Utopian
U·to′pi·an, a. Of or pertaining to Utopia; resembling Utopia; hence, ideal; chimerical; fanciful; founded upon, or involving, imaginary perfections; as, Utopian projects; Utopian happiness.
U·to′pi·an, n. An inhabitant of Utopia; hence, one who believes in the perfectibility of human society; a visionary; an idealist; an optimist. Hooker.