The phrase "world-old" refers to something that has been present since the beginning of time. A few synonyms for this term are time-honored, ancient, and traditional. These words all describe something that has been around for a long time and has stood the test of time. Another synonym for "world-old" is perennial, meaning something that lasts for an indefinitely long period of time. Finally, the term "venerable" can also be used as a synonym for world-old, as it implies a great deal of respect and admiration for something that has endured throughout history. All of these synonyms convey a sense of timelessness and endurance that are associated with things that are world-old.