quicken in WordNet English dictionary

1. move faster
   "The car accelerated"
   accelerate  speed up  speed  quicken 
   
2. give new life or energy to
   "A hot soup will revive me"; "This will renovate my spirits"; "This treatment repaired my health"
   animate  recreate  reanimate  revive  renovate  repair  quicken  vivify  revivify 
   
3. give life or energy to
   "The cold water invigorated him"
   quicken  invigorate 
   
4. show signs of life
   "the fetus quickened"
   quicken 
   
5. make keen or more acute
   "whet my appetite"
   whet  quicken