unuttered adj : not made explicit; "the unexpressed terms of the agreement"; "things left unsaid"; "some kind of unspoken agreement"; "his action is clear but his reason remains unstated" [syn: unexpressed, unsaid, unstated, unverbalized, unverbalised, unvoiced, unspoken]

arcane, cabalistic, censored, classified, close, closed, concealed, cryptic, dark, echoless, enigmatic, esoteric, hermetic, hidden, hush as death, hush-hush, hushed, implicit, implied, inaudible, inferred, latent, mousy, mysterious, noiseless, occult, quiescent, quiet, restricted, secret, silent, smothered, soundless, stifled, still, still as death, stilly, subaudible, suppressed, tacit, top secret, ulterior, unarticulated, unbreatheable, undeclared, under security, under wraps, understood, undisclosable, undisclosed, undivulgable, undivulged, unexpressed, unhearable, unmentioned, unproclaimed, unpronounced, unpublished, unrecorded, unrevealable, unrevealed, unsaid, unsounded, unspoken, unsung, untalked-of, untellable, untold, unutterable, unvocalized, unvoiced, unwhisperable, unwritten, whist, wordless