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Synonyms

long-standing

British  

adjective

  1. 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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

One long standing idea suggested that a particle's electric charge increases in direct proportion to its size.

From Science Daily • Apr. 23, 2026

The discovery challenges long standing assumptions about where these unusual nuclear regions can form and offers new insight into the fundamental forces that hold atomic nuclei together.

From Science Daily • Mar. 8, 2026

She also hopes the discovery encourages scientists to rethink the long standing assumption that wrinkle structures are created only by photosynthetic microbial mats.

From Science Daily • Mar. 8, 2026

The research, published in Nature Communications March 5, 2026, challenges long standing design assumptions in solar energy science.

From Science Daily • Mar. 6, 2026

It was almost as if they were friends of long standing.

From "Johnny Tremain" by Esther Hoskins Forbes

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