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"; "constant revision keeps the book au courant"; "always au fait on the latest events"; "up on the news")
Overview of adv abreast
The adv abreast has 1 sense
abreast -- (alongside each other, facing in the same direction)
(Sound)
