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possible; conceivable; likely; probable
「あり得る」 has another reading with different meanings.
そんなことが有り得るとは思わなかった。
I didn't think such a thing was possible.
最悪の事態も有り得ると覚悟した。
I prepared myself that the worst-case scenario was also possible.
この結果は十分有り得る話だ。
This result is entirely conceivable.