Main entry: undeveloped
Definition: not developed
Usage: courses in interior design were rare and undeveloped; undeveloped social awareness
Antonyms: developed
Definition: being changed over time so as to be e.g. stronger or more complete or more useful
Main entry: undeveloped, unexploited
Definition: undeveloped or unused
Usage: vast unexploited (or undeveloped) natural resources; taxes on undeveloped lots are low
Antonyms: exploited
Definition: developed or used to greatest advantage
Antonyms: tapped
Definition: in a condition for letting out liquid drawn out as by piercing or drawing a plug