How to say "blackout" in Japanese

• 灯火管制とうかかんせいCommon
  nounCovers the military sense of 'blackout': extinguishing lights during a nighttime air raid so that enemy aircraft cannot see the area below. Think of wartime air-raid precautions, not electricity.
• 停電ていでんJLPT N2approx.Common
  noun, suru verb, intransitive verbThis is the word for the electrical blackout: a loss of power supply, as when the lights suddenly go out. Use it whenever 'blackout' means a power outage or power cut.
  台風たいふうの余波よはで２日間にちかん停電ていでんした。↗

  There was no electricity for two days in the aftermath of the typhoon.

Use 停電 for the electrical blackout, a loss of power supply; 灯火管制 is the wartime blackout, extinguishing lights during a nighttime air raid so enemy aircraft cannot see them.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 灯火管制とうかかんせいblackout (to prevent being seen by enemy aircraft during a nighttime air raid)
• 停電ていでんpower outage
• ブラックアウトblackout
• 電源喪失でんげんそうしつloss of power
• 暗転あんてん(theatrical) blackout
• ダークチェンジ(theatrical) blackout