nosedive

/ˌnoʊzˈdaɪv/

Other forms: nosedived; nosedives; nosediving

Definitions of nosedive

1. noun

   a steep nose-down descent by an aircraft
   synonyms: dive, nose dive

   types:

   power dive

   a dive of an airplane that is accelerated both by gravity and by the power of the engine

   type of:

   descent

   the act of changing your location in a downward direction
2. noun

   a sudden sharp drop or rapid decline
   “the stock took a nosedive”

   type of:

   decline, diminution

   change toward something smaller or lower
3. verb

   plunge nose first; drop with the nose or front first, of aircraft
   type of:

   dive, plunge, plunk

   drop steeply