RhymeZone: improved definitions

Definitions of improved:

adjective: made more desirable or valuable or profitable; especially made ready for use or marketing
Example: "New houses are springing up on an improved tract of land near the river"
adjective: (of land) made ready for development or agriculture by clearing of trees and brush
Example: "Improved farmlands"
adjective: become or made better in quality
Example: "Was proud of his improved grades"

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See improved used in context: 17 rhymes, several books and articles.