expression, godan verb (-ru)
die down (fire); be brought under control (fire)
Literally describes a fire losing intensity and becoming smaller. Also used figuratively for things calming down.
消防隊が到着したときには、火事はもう下火になっていた。
When the fire brigade arrived, the fire had already died down.
expression, godan verb (-ru)
decline; wane; fall off; go out of fashion
Idiomatic use for trends, popularity, excitement, or activity losing momentum. Often used for fads, movements, or public interest.
そのゲームの人気はもう下火になった。
The popularity of that game has already waned.
ブームが下火になると、店は閉店した。
When the boom died down, the shop closed.