| Adj. | 1. | undeveloped - not developed; "courses in interior design were rare and undeveloped"; "undeveloped social awareness" Antonyms: developed - being changed over time so as to be e.g. stronger or more complete or more useful; "the developed qualities of the Hellenic outlook"; "they have very small limbs with only two fully developed toes on each" |
| 2. | undeveloped - undeveloped or unused; "vast unexploited (or undeveloped) natural resources" Synonyms: unexploited | |
| 3. | undeveloped - (of real estate) not built upon or ready for building upon; "taxes on undeveloped lots are low" |