say it: uhn-di-VEL-uhpt
undeveloped is an adjective meaning "not developed, mature, or fully formulated". It carries 2 recorded senses.
not developed, improved, exploited or used
“vast unexploited (or undeveloped) natural resources”
“taxes on undeveloped lots are low”
Definitions, synonyms and semantic relations for undeveloped come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.