plunge plunge /ˈplʌndʒ/

noun

1. () A brief swim in water  ( dip , plunge )
   a brief swim in water
    He took a plunge into the cold ocean water.
   He took a plunge into the cold ocean water.
   
   
2. A steep and rapid fall  ( plunge )
   a steep and rapid fall
   

verb

1. () Thrust or throw into  ( immerse , plunge )
   thrust or throw into
    Immerse yourself in hot water
   Immerse yourself in hot water
   
2. () Begin with vigor  ( launch , plunge )
   begin with vigor
    He launched into a long diatribe
   He launched into a long diatribe
    She plunged into a dangerous adventure
   She plunged into a dangerous adventure
   
3. () Dash violently or with great speed or impetuosity  ( plunge )
   dash violently or with great speed or impetuosity
    She plunged at it eagerly
   She plunged at it eagerly
   
4. () Drop steeply  ( plunk , dive , plunge )
   drop steeply
    The stock market plunged
   the stock market plunged
   
5. () Cause to be immersed  ( immerse , plunge )
   cause to be immersed
    The professor plunged his students into the study of the Italian text
   The professor plunged his students into the study of the Italian text
   
6. Devote (oneself) fully to  ( plunge , soak up , ingulf [Archaic] , absorb , engross , engulf , immerse , steep )
   devote (oneself) fully to
    He immersed himself into his studies
   He immersed himself into his studies
   
7. Immerse briefly into a liquid so as to wet, coat, or saturate  ( douse , plunge , souse , dip , dunk )
   immerse briefly into a liquid so as to wet, coat, or saturate
    Dip the garment into the cleaning solution
   dip the garment into the cleaning solution
    Dip the brush into the paint
   dip the brush into the paint
   
8. Fall abruptly  ( dump , plunge )
   fall abruptly
    It plunged to the bottom of the well
   It plunged to the bottom of the well