u ‧ to ‧ pi ‧ a BrE AmE , Utopia /juːˈtəʊpiə $ -ˈtoʊ-/ noun [uncountable and countable]
[ Date: 1500-1600 ; Origin: Utopia imaginary perfect country in the book Utopia (1516) by Sir Thomas More, from Greek ou 'not, no' + topos 'place' ]
an imaginary perfect world where everyone is happy ⇨ dystopia
—utopian adjective :
a utopian society
—utopianism noun [uncountable]