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cruel; brutal; ruthless; merciless; inhuman
戦争の惨酷な現実を後世に伝えなければならない。
The cruel reality of war must be conveyed to future generations.
惨酷な仕打ちに耐えながら生き延びた人々がいる。
There are people who survived while enduring cruel treatment.
彼の惨酷な一面を知って周囲は驚いた。
Those around him were shocked to learn of his cruel side.