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Synonyms

longtime

American  
[lawng-tahym, long-] / ˈlɔŋˌtaɪm, ˈlɒŋ- /

adjective

  1. existing, occurring, or continuing for a long period of time; times; longstanding.

    longtime friends celebrating 50 years of association.
longtime British  
/ ˈlɒŋˌtaɪm /

adjective

  1. of long standing

"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

Etymology

Origin of longtime

First recorded in 1575–85; long 1 + time

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.

Health and Human Services Secretary Robert F. Kennedy Jr., a longtime fan who celebrated the release of the 2025 “MAHA Report” with a shot of raw milk.

From Los Angeles Times • Apr. 2, 2026

US President Donald Trump has removed Attorney General Pam Bondi - a longtime ally and fierce defender of his administration - from her post as America's top law enforcement officer.

From BBC • Apr. 2, 2026

Nesbitt was a soft-spoken presence in a business of outsize egos, says Greg Williamson, a longtime pension-fund executive.

From The Wall Street Journal • Apr. 1, 2026

Another longtime observer of IPOs, the University of Florida professor Jay Ritter, also thinks the 15-day fast entry to the Nasdaq 100 will foster a kind of slow-motion flipping.

From Barron's • Apr. 1, 2026

We stand for what feels like a longtime, until my shoulders ache from supporting my arms.

From "Allegiant" by Veronica Roth

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.