1. [ adjective ] not made more desirable or valuable or profitable; especially not made ready for use or marketing

"taxes on unimproved land are low" "unimproved dirt roads"

Related terms: improved scrub undeveloped dirt
2. [ adjective ] (of land) not cleared of trees and brush; in the wild or natural state

"a farm with 50 acres of unimproved and 68 acres of improved land" "unimproved woodlands"

Related terms: uncleared
Similar spelling:   unimpaired