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perhaps; possibly; maybe; by some chance
もしかすると明日あすは雨あめが降るふるかもしれない。
It might rain tomorrow.
もしかすると彼かれはもう帰っかえったのではないか?
Maybe he's already gone home.
もしかすると彼かれは遅れるおくれるかもね。
Perhaps he might be late