Utopian

UK: /juːˈtəʊpɪən/ US: (yo̅o̅ tō′pē ən)

WordReference Random House Unabridged Dictionary of American English © 2025

U•to•pi•an  (yo̅o̅ tō′pē ən), adj. 

1. Philosophy of, pertaining to, or resembling Utopia.
2. (usually l.c.) founded upon or involving idealized perfection.
3. (usually l.c.) given to impractical or unrealistic schemes of such perfection.

n. 

4. Philosophy an inhabitant of Utopia.
5. Philosophy (usually l.c.) an ardent but impractical political or social reformer;
   visionary;
   idealist.

• Neo-Latin Utopiānus. See Utopia, -an
• 1545–55

Synonyms

• 3. visionary, idealistic; impracticable.

Collins Concise English Dictionary © HarperCollins Publishers::

Utopian / juːˈtəʊpɪən/(sometimes not capital) adjective

1. of or relating to a perfect or ideal existence
   Also: utopistic

noun

1. an idealistic social reformer
   Also: utopist

Uˈtopianˌism noun

WordReference Random House Learner's Dictionary of American English © 2025

U•to•pi•a /yuˈtoʊpiə/   n., pl. -pi•as. 

1. Literature, Philosophy [proper noun] an imaginary island described in Sir Thomas More's Utopia (1516) as enjoying perfection in law, politics, etc.
2. Philosophy [countable* usually: utopia] any ideal place or state.

U•to•pi•an, u•to•pi•an, adj., n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2025

U•to•pi•a  (yo̅o̅ tō′pē ə), n. 

1. Literature, Philosophy an imaginary island described in Sir Thomas More's Utopia (1516) as enjoying perfection in law, politics, etc.
2. Philosophy (usually l.c.) an ideal place or state.
3. Philosophy (usually l.c.) any visionary system of political or social perfection.

• Greek ou not + tóp(os) a place + -ia -y³
• Neo-Latin (1516)