on

Adverb

• in a state required for something to function or be effective
  • turn the lights on
    
  • get a load on
    

• indicates continuity or persistence or concentration
  • his spirit lives on
    
  • shall I read on?
    

• with a forward motion
  • we drove along admiring the view
    
  • the horse trotted along at a steady pace
    
  • the circus traveled on to the next city
    
  • move along
    
  • march on
    

Adjective

• (of events) planned or scheduled
  • the picnic is on, rain or shine
    
  • we have nothing on for Friday night
    

• in operation or operational
  • left the oven on
    
  • the switch is in the on position
    

Related words

• Antonyms: 
  off , cancelled