形容词

1. （国家或地区）不发达的，落后的
    An undeveloped country or region does not have modern industries and usually has a low standard of living.

2. （土地）未开发的，未开垦的
    Undeveloped land has not been built on or used for activities such as mining and farming.

1. not developed

    e.g. courses in interior design were rare and undeveloped
           undeveloped social awareness

2. undeveloped or unused

    e.g. vast unexploited (or undeveloped) natural resources
           taxes on undeveloped lots are low

    Synonym: unexploited