怪かい火か

noun

suspicious fire; mysterious fire; suspected arson

Refers to a fire whose cause is unclear or possibly deliberate. Often used in news reports or investigations. Compare 不審火, which is more common for suspected arson.

See also: 不審火

• 昨さく夜や、駅えき近ちかくの空あき家やで怪かい火かがあった。

  Last night there was a suspicious fire at an empty house near the station.

noun

will-o'-the-wisp; mysterious flame

Refers to a ghostly or inexplicable flame, often in folklore or supernatural contexts. Less common in everyday speech.

• 夜よるの墓ぼ地ちで怪かい火かを見みたという話はなしがある。

  There is a story about seeing a will-o'-the-wisp in the graveyard at night.