verb (used without object), li·aised, li·ais·ing.

to form a liaison.

Origin of liaise

First recorded in 1925–30; back formation from liaison Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for liaising



(intr usually foll by with) to communicate and maintain contact (with)

Word Origin for liaise

C20: back formation from liaison
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 liaising



1928, back-formation from liaison. Said to be a coinage of British military men in World War I. Related: Liaised; liaising.

Online Etymology Dictionary, © 2010 Douglas Harper