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time-tested

American  
[tahym-tes-tid] / ˈtaɪmˌtɛs tɪd /

adjective

  1. having proved valid, workable, or useful over a long span of time.

    a time-tested theory.

Etymology

Origin of time-tested

First recorded in 1940–45

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.