Added 8 October 2026 age-old adjective Categories: Describing Words adjective ! Definition from WordNet 3.1, Princeton University. More about age-old at Wordnik → Where our words come from → Belonging to or lasting from times long ago. age-old customs Related Words: ancientantiqueoldtime-honoredold-fashionedoutdatedaboriginalstereotypicalwell-establishedtraditionallong-timelong-established Back to today's word