abreast abreast /əˈbrɛst/

adjective

1. Being up to particular standard or level especially in being up to date in knowledge  ( abreast , au courant , au fait , up on )
   being up to particular standard or level especially in being up to date in knowledge
    Kept abreast of the latest developments
   kept abreast of the latest developments
    Constant revision keeps the book au courant
   constant revision keeps the book au courant
    Always au fait on the latest events
   always au fait on the latest events
    Up on the news
   up on the news
   

adverb

1. Alongside each other, facing in the same direction  ( abreast )
   alongside each other, facing in the same direction