meaning of unimproved
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.
3. Not tilled, cultivated, or built upon; yielding no revenue; as, unimproved land or soil.
4. not made more desirable or valuable or profitable; especially not made ready for use or marketing; "taxes on unimproved land are low"; "unimproved dirt
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