in advance

Adjective

• situated ahead or going before
  • an advance party
    
  • at that time the most advanced outpost was still east of the Rockies
    

Adverb

• ahead of time; in anticipation
  • when you pay ahead (or in advance) you receive a discount
    
  • We like to plan ahead
    
  • should have made reservations beforehand
    

Related words

• Synonyms: 
  advance(a) , advanced(a) , in advance(p) , ahead , beforehand