up on

Adjective

• being up to particular standard or level especially in being up to date in knowledge
  • kept abreast of the latest developments
    
  • constant revision keeps the book au courant
    
  • always au fait on the latest events
    
  • up on the news
    

Related words

• Synonyms: 
  abreast(p) , au courant , au fait , up on(p)