List of classified synonyms and classified related words.
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