Added 10 October 2026 built-up adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about built-up at Wordnik → Where our words come from → Peopled with settlers. the built-up areas Related Words: settledin-builtaccruedresidentialpopulatedurbanaccumulatedurbanisedurbanizedbuiltupsuperstructive Back to today's word