longstanding

American  

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

adjective

1. existing or occurring for a long time.

   a longstanding feud.

   Synonyms:

   long-lasting, lasting, enduring

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Etymology

Origin of longstanding

First recorded in 1595–1605; long ¹ + standing

Example Sentences

Takaichi has refused, saying they were a statement of longstanding, if largely unspoken, Japanese policy.

From The Wall Street Journal

Cuba - a longstanding socialist ally of Maduro - has announced two days of national mourning.

From BBC

The state’s longstanding vocational high-school system has become a coveted pathway for students.

From The Wall Street Journal

The BLS’s choice to carry forward previous shelter costs was in line with longstanding contingency plans for missing data, the agency said.

From The Wall Street Journal

Cooper said it was clear there had been an "unacceptable failure" and that longstanding due diligence procedures had been "completely inadequate for this situation".

From BBC