noun, noun or participle which takes 'suru', intransitive verb
sudden drop; sharp fall; nosedive; swoop
Describes a rapid, steep descent of an aircraft, bird, or figuratively of prices, rankings, etc. Often used as a noun or with する.
旅客機が乱気流で急降下した。
The passenger plane made a sudden drop due to turbulence.
Stock prices nosedived and investors panicked.