plummet
US /ˈplʌm.ɪt/
UK /ˈplʌm.ɪt/

1.
storten, neerploffen
fall or drop straight down at high speed
:
•
The plane plummeted to the ground after engine failure.
Het vliegtuig stortte naar de grond na motorstoring.
•
The stone plummeted into the deep well.
De steen viel in de diepe put.