Antonyms of adj unclassified

2 senses of unclassified

Sense 1
unclassified (vs. classified) -- (not subject to a security classification)

classified (vs. unclassified) -- (official classification of information or documents; withheld from general circulation; "thousands of classified documents have now been declassified")
        => eyes-only -- (official classification for documents; meant to be seen by only the person to whom it is directed)
        => confidential -- (the level of official classification for documents next above restricted and below secret; available only to persons authorized to see documents so classified)
        => restricted -- (the lowest level of official classification for documents)
        => secret -- (the next to highest level of official classification for documents)
        => sensitive -- (of or pertaining to classified information or matters affecting national security)
        => top-secret -- (the highest official level of classification of documents)

Sense 2
unclassified (vs. classified) -- (not arranged in any specific grouping)

classified (vs. unclassified) -- (arranged into classes)
        => categorized, categorised -- (arranged into categories)
        => grouped, sorted -- (arranged into groups)

Similarity of adj unclassified

2 senses of unclassified

Sense 1
unclassified (vs. classified) -- (not subject to a security classification)
       => declassified -- (having had security classification removed)
       => nonsensitive, unrestricted -- (never having had security classification)

Sense 2
unclassified (vs. classified) -- (not arranged in any specific grouping)
       => uncategorized, uncategorised, unsorted -- (not categorized or sorted)