longstanding

[ lawng-stan-ding, long- ]
/ ˈlɔŋˈstæn dɪŋ, ˈlɒŋ- /

adjective

existing or occurring for a long time: a longstanding feud.

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advocate

Origin of longstanding

First recorded in 1595–1605; long1 + standing
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for long-standing

British Dictionary definitions for long-standing

long-standing

adjective

existing or in effect for a long time
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