Antonyms of adj unimproved

2 senses of unimproved

Sense 1
unimproved (vs. improved) -- (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")

improved (vs. unimproved) -- (made more desirable or valuable or profitable; especially made ready for use or marketing; "new houses are springing up on an improved tract of land near the river"; "an improved breed")
        => built, reinforced -- ((used of soaps or cleaning agents) having a substance (an abrasive or filler) added to increase effectiveness; "the built liquid detergents")
        => developed -- ((of real estate) made more useful and profitable as by building or laying out roads; "condominiums were built on the developed site")
        => landscaped -- ((of land) improved by gardening or landscape architecture; "carefully landscaped gardens")

Sense 2
unimproved -- ((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")

INDIRECT (VIA uncleared) -> cleared -- (rid of objects or obstructions such as e.g. trees and brush; "cleared land"; "cleared streets free of fallen trees and debris"; "a cleared passage through the underbrush"; "played poker on the cleared dining room table")

Similarity of adj unimproved

2 senses of unimproved

Sense 1
unimproved (vs. improved) -- (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")
       => dirt, ungraded -- ((of roads) not leveled or drained; unsuitable for all year travel)
       => scrub -- ((of domestic animals) not selectively bred)

Sense 2
unimproved -- ((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")
       => uncleared (vs. cleared) -- (not cleared; not rid of objects or obstructions; "uncleared land"; "many cars were stuck in the snow on uncleared streets")