“Unpredictability” in Japanese
Short answer
Unpredictability in Japanese is “意外性” (igaisei). Full meaning: unpredictability, element of surprise.
Other ways to say “Unpredictability” in Japanese
風来
fuurai frivolity, unpredictability, erraticism; first-time guest in a red-light district
偶然性
guuzensei contingency, fortuity, randomness, unpredictability, haphazardry
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