[syn: unexpressed, unsaid, unstated, unuttered, unverbalized, unverbalised, unvoiced, unspoken]
The Collaborative International Dictionary of English v.0.48:
Unspoken \Unspoken\
   See spoken.
   [break]
WordNet (r) 3.0 (2006):
unspoken
    adj 1: expressed without speech; "a mute appeal"; "a silent
           curse"; "best grief is tongueless"- Emily Dickinson; "the
           words stopped at her lips unsounded"; "unspoken grief";
           "choking exasperation and wordless shame"- Thomas Wolfe
           [syn: mute, tongueless, unspoken, wordless]
    2: 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, unuttered,
       unverbalized, unverbalised, unvoiced, unspoken]
Moby Thesaurus II by Grady Ward, 1.0:
62 Moby Thesaurus words for "unspoken":
   arcane, cabalistic, censored, classified, close, closed, concealed,
   cryptic, dark, enigmatic, esoteric, hermetic, hidden, hinted,
   hush-hush, implicit, implied, inferred, intimated, latent, mute,
   mysterious, occult, restricted, secret, silent, smothered, stifled,
   suggested, suppressed, tacit, top secret, ulterior, unbreatheable,
   undeclared, under security, under wraps, understood, undisclosable,
   undisclosed, undivulgable, undivulged, unexpressed, unmentioned,
   unproclaimed, unpronounced, unpublished, unrecorded, unrevealable,
   unrevealed, unsaid, unstated, unsung, untalked-of, untellable,
   untold, unutterable, unuttered, unvoiced, unwhisperable, unwritten,
   wordless