The Collaborative International Dictionary of English v.0.48:

Unequivocal \Un`e*quiv"o*cal\, a.
   Not equivocal; not doubtful; not ambiguous; evident; sincere;
   plain; as, unequivocal evidence; unequivocal words. --
   Un`e*quiv"o*cal*ly, adv. -- Un`e*quiv"o*cal*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

unequivocal
    adj 1: admitting of no doubt or misunderstanding; having only
           one meaning or interpretation and leading to only one
           conclusion; "unequivocal evidence"; "took an unequivocal
           position"; "an unequivocal success"; "an unequivocal
           promise"; "an unequivocal (or univocal) statement" [syn:
           unequivocal, univocal, unambiguous] [ant:
           ambiguous, equivocal]
    2: clearly defined or formulated; "the plain and unequivocal
       language of the laws"- R.B.Taney [syn: definitive,
       unequivocal]

Moby Thesaurus II by Grady Ward, 1.0:

169 Moby Thesaurus words for "unequivocal":
   absolute, admitting no exception, all-out, apodictic, apparent,
   arrant, artless, bluff, blunt, bound, broad, brusque, candid,
   categorical, certain, classical, clean-cut, clear,
   clear and distinct, clear as crystal, clear as day, clear-cut,
   coherent, complete, conclusive, connected, consistent, consummate,
   crass, crisp, crystal-clear, crystalline, decided, decisive,
   defined, definite, definitive, determinate, direct, distinct,
   downright, egregious, entire, evident, explicit, express, final,
   fixed, flagrant, flat, flat-out, forthright, frank, frankhearted,
   free, free-speaking, free-spoken, free-tongued, full, genuine,
   glaring, global, gross, heart-to-heart, illimitable, implicit,
   inappealable, incontestable, incontrovertible, indisputable,
   indubitable, ineluctable, inevitable, ingenuous, intolerable,
   limitless, limpid, loud and clear, lucid, luminous, manifest,
   necessary, no strings, obvious, open, openhearted, out-and-out,
   outright, outspoken, palpable, patent, pellucid, peremptory,
   perfect, perfectly sure, perspicuous, plain, plain-spoken, plenary,
   positive, precious, predestined, predetermined, profound,
   pronounced, proper, rank, regular, round, shattering, shocking,
   simple, sincere, stark, stark-staring, straight, straight-out,
   straightforward, superlative, sure, sure-enough, surpassing,
   the veriest, thorough, thoroughgoing, total, translucent,
   transparent, transpicuous, true, unambiguous, unbearable, unbound,
   unbounded, unchecked, uncircumscribed, unconditional,
   unconditioned, unconfined, unconfused, unconscionable,
   unconstrained, uncontestable, undeniable, undoubting, unguarded,
   unhampered, unhesitating, univocal, unlimited, unmeasured,
   unmistakable, unmitigated, unqualified, unquestionable,
   unquestioning, unrelieved, unreserved, unrestrained, unrestricted,
   unspoiled, unwaivable, utter, well-defined, whole, wide-open,
   without exception, without reserve, without strings