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violent; furious; tempestuous
extreme; intense; fierce; strong
fervent; vehement
incessant; relentless
劇しい痛みが突然走って動けなくなる。
A sharp pain suddenly shot through me and I couldn't move.
劇しい競争を勝ち抜いて内定をもらった。
I got a job offer after winning out in fierce competition.
昨夜の雷雨は稲光も劇しかった。
Last night's thunderstorm had intense lightning as well.