abreast

1 ENTRIES FOUND:
abreast /əˈbrɛst/ adverb
abreast
/əˈbrɛst/
adverb
Britannica Dictionary definition of ABREAST
— used to describe two or more people or things that are next to each other in a line

abreast of

1 
: next to (someone or something)
2 
: aware of or informed about (new occurrences, facts, etc.)