boost in WordNet English dictionary

1. increase or raise
   "boost the voltage in an electrical circuit"
   boost  advance  supercharge 
   
2. contribute to the progress or growth of
   "I am promoting the use of computers in the classroom"
   promote  advance  boost  further  encourage 
   
3. give a boost to; be beneficial to
   "The tax cut will boost the economy"
   boost 
   
4. push or shove upward, as if from below or behind
   "The singer had to be boosted onto the stage by a special contraption"
   boost 
   
5. increase
   "The landlord hiked up the rents"
   hike  hike up  boost 
   

1. the act of giving hope or support to someone
   boost  encouragement 
   
2. the act of giving a push
   "he gave her a boost over the fence"
   boost 
   
3. an increase in cost
   "they asked for a 10% rise in rates"
   rise  boost  hike  cost increase