"visionary" in the noun sense
1. visionary
a person given to fanciful speculations and enthusiasms with little regard for what is actually possible
2. visionary, illusionist, seer
a person with unusual powers of foresight
"visionary" in the adjective sense
1. airy, impractical, visionary, Laputan, windy
not practical or realizable speculative
"airy theories about socioeconomic improvement"
"visionary schemes for getting rich"
Source: WordNet® (An amazing lexical database of English)
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