Ungraded
Part of speech: adjective
Definition: Not graded; having no grade.
Unimproved
Part of speech: adjective
Definition: Not improved
Ungraded as an adjective is not graded; having no grade. while Unimproved as an adjective is not improved
Part of speech: adjective
Definition: Not graded; having no grade.
Part of speech: adjective
Definition: Not improved
We hope you now know whether to use Ungraded or Unimproved in your sentence.