n .
a dreamer ; someone with impractical goals or ideals about the future 몽상가 ; 미래에 대해 비현실적인 목표나 이상을 가진 사람

• My uncle was a visionary, not a businessman ; he spent too much time thinking with his antigravity generator and not enough time working in his plumbing business.
• The candidate was a visionary ; he had a lot of big ideas but no realistic plan for putting them into practice.
• Visionary can also be an adjective. A visionary proposal is an idealistic and usually impractical proposal.