ungraded

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. (of roads) not leveled or drained;
unsuitable for all year travel
• Syn:
dirt
• Similar to:
unimproved
2. not arranged in order hierarchically
• Syn:
unordered, unranked
• Similar to:
nonhierarchical, nonhierarchic