火勢

かせい
force of flames

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かせい【火勢】

the force of a fire [the flames]; the fire; the flames.

●火勢が強い furiously flaming

・火勢が強まった[増した]. The fire [flames] grew stronger [increased in intensity, gained headway].

・火勢が衰えた[弱まった]. The fire [flames] abated. | The fire went down.

●火勢を弱める damp down.