unimproved

Un`im*proved", a. 1. Not improved; not made better or wiser; not advanced in knowledge, manners, or excellence. 2. Not used; not employed; especially, not used or employed for a valuable purpose; as, unimproved opportunities; unimproved blessings. Cowper. 3. Not tilled, cultivated, or built upon; yielding no revenue; as, unimproved land or soil.

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