The quality of being fantastic; how extraordinary, impressive, or wonderfully imaginative something is.
From fantastic plus the noun-forming suffix -ness meaning 'state or quality.' This is the more common modern form compared to fantasticality, following English's preference for -ness over -ality in everyday speech.
Languages differ in how they measure 'fantasticalness'—English emphasizes imagination and wonder, but German 'Fantastik' emphasizes strangeness and otherness, reflecting different cultural attitudes toward the fantastic.
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