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opaque; obscure; murky; turbid
opacity; obscurity
unclear; unpredictable; uncertain
経済の先行きが不透明だ。
The economic outlook is unclear.
不透明な状況が続いており判断が難しい。
The murky situation continues and it is difficult to make a decision.
社会のルールが不透明で市民が不安を感じている。
The rules of society are opaque and citizens feel uneasy.