- not improved or made better
- (of land) not cleared, drained, cultivated, etc
- neglected; unused: unimproved resources
WordReference Random House Unabridged Dictionary of American English © 2026
un•im•proved
(un′im pro̅o̅vd′),USA pronunciation adj.
- not developed to full potential, as resources or the mind.
- not showing improvement, as one's health, appearance, etc.
- Business(of land) not fitted for a profitable use, as by clearing, cultivation, addition of facilities for dwelling or business purposes, or the like.
- not used to advantage;
neglected:an unimproved opportunity. - Genetics(of animal or plant species) not made more useful or attractive by selective breeding or cultivation.
- not enhanced;
not increased:Our chance of success is unimproved.
- un-1 + improved 1655–65
Collins Concise English Dictionary © HarperCollins Publishers::
unimproved /ˌʌnɪmˈpruːvd/ adj