UNIMPROVED, adjective 1. Not improved; not made better or wiser; not advanced in knowledge, manners or excellence. 2. Not used for a valuable purpose. How many advantages unimproved have we to regret! 3. Not used; not employed. 4. Not tilled; not cultivated; as unimproved land or soil; unimproved lots of ground. 5. Uncensured; not disapproved. [This sense, from the Latin improbo, is entirely obsolete.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI