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abreast

American  
[uh-brest] / əˈbrɛst /

adverb

  1. side by side; beside each other in a line.

    They walked two abreast down the street.

  2. equal to or alongside in progress, attainment, or awareness (usually followed by of orwith ).

    to keep abreast of scientific developments; keeping abreast with the times.
abreast British  
/ əˈbrɛst /

adjective

  1. alongside each other and facing in the same direction

  2. up to date (with); fully conversant (with)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of abreast

First recorded in 1590–1600; a- 1 + breast

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.