classified (root: classify)

• POS: Adjective
• HYPHEN: clas=si=fied

CIDE DICTIONARY

classified, adj. 

•  arranged into classes or categories; as, unclassified.  [WordNet 1.5]
•  assigned to a class of documents withheld from general circulation; -- of information or documents. Opposite of unclassified.

  "[Narrower terms: eyes-only; confidential; restricted; secret; sensitive; top-secret]"  [WordNet 1.5]

OXFORD DICTIONARY

classified, adj.
1 arranged in classes or categories.
2 (of information etc.) designated as officially secret.
3 Brit. (of a road) assigned to a category according to its importance.
4 Brit. (of newspaper advertisements) arranged in columns according to various categories.

THESAURUS

classified

aligned, arcane, arranged, arrayed, assorted, cabalistic, cataloged, categorized, censored, close, closed, composed, concealed, constituted, cryptic, dark, disposed, enigmatic, esoteric, filed, fixed, graded, grouped, harmonized, hermetic, hidden, hierarchic, hush-hush, indexed, latent, marshaled, methodized, mysterious, normalized, occult, on file, ordered, orderly, organized, pigeonholed, placed, pyramidal, ranged, ranked, rated, regularized, regulated, restricted, routinized, secret, smothered, sorted, standardized, stifled, stratified, suppressed, synchronized, systematized, tabular, top secret, ulterior, unbreatheable, under security, under wraps, undisclosable, undisclosed, undivulgable, undivulged, unrevealable, unrevealed, unspoken, untellable, untold, unutterable, unuttered, unwhisperable