along, by, at, or to the side of something: We brought the boat alongside.
beside; by the side of: The dog ran alongside me all the way.
Informal. alongside of, compared with: Alongside of his brother, he is no student at all.
Origin of alongside
First recorded in 1700–10; along
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for alongside of
(often foll by of) along the side of; along besidealongside the quay
along the side of some specified thingcome alongside
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
Word Origin and History for alongside of
1707, from along + side (n.). A word formed from a phrase. Originally mostly nautical.
Online Etymology Dictionary, © 2010 Douglas Harper
Idioms and Phrases with alongside of
Beside, next to, as in Tom's canoe lay alongside of mine. [Late 1700s]
Together with, as in Her children played alongside of mine all summer long. [Late 1700s]
Compared to, as in My car doesn't look like much alongside of Dad's. [Colloquial; late 1800s]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.