When we talk about something that has stood the test of time, we usually refer to how long it has lasted or remained relevant. These synonyms for the phrase convey similar meanings but with different nuances. Endurance, resilience, longevity, and permanence all suggest something that has held up over time and kept its value. Timelessness suggests a quality that is not affected by time, while classic or timeless denotes something that is a timeless example of a certain style or beauty. Durability implies something that is long-lasting but also able to withstand wear and tear. All of these synonyms capture the idea of something that has survived the passage of time.