The Collaborative International Dictionary of English v.0.48:

Transcendent \Tran*scend"ent\, a. [L. transcendens, -entis, p.
   pr. of transcendere to transcend: cf. F. transcendant, G.
   transcendent.]
   1. Very excellent; superior or supreme in excellence;
      surpassing others; as, transcendent worth; transcendent
      valor.
      [1913 Webster]

            Clothed with transcendent brightness. --Milton.
      [1913 Webster]

   2. (Kantian Philos.) Transcending, or reaching beyond, the
      limits of human knowledge; -- applied to affirmations and
      speculations concerning what lies beyond the reach of the
      human intellect.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Transcendent \Tran*scend"ent\, n.
   That which surpasses or is supereminent; that which is very
   excellent.
   [1913 Webster]

WordNet (r) 3.0 (2006):

transcendent
    adj 1: exceeding or surpassing usual limits especially in
           excellence [syn: transcendent, surpassing]
    2: beyond and outside the ordinary range of human experience or
       understanding; "the notion of any transcendent reality beyond
       thought"

Moby Thesaurus II by Grady Ward, 1.0:

106 Moby Thesaurus words for "transcendent":
   Christlike, Christly, a cut above, above, absolute, accomplished,
   ahead, amorphous, ascendant, better, blind, boundless, capping,
   celestial, chosen, clear as mud, cloudy, consummate, dark, dim,
   distinguished, divine, eclipsing, eminent, empyrean, entire,
   eternal, exceeding, excellent, excelling, finer, finished, foggy,
   fuzzy, godlike, godly, greater, hazy, heavenly, higher,
   hypothetical, ideal, in ascendancy, in the ascendant, incarnate,
   incarnated, incomparable, indeterminate, indistinct, infinite,
   intact, intercessional, intercessive, made flesh, magnificent,
   major, marked, matchless, mediative, mediatory, misty, muddy,
   murky, nebulous, obscure, of choice, one up on, opaque,
   outstanding, over, paramount, peerless, perfect, preeminent,
   propitiative, propitiatory, rare, redemptive, rivaling,
   salvational, self-existent, shadowy, shapeless, sublime, super,
   superb, superhuman, superior, supernatural, supreme, surpassing,
   theoretical, topping, towering, transcendental, transcending,
   ultimate, unclear, unique, unmatchable, unparalleled, unplain,
   unsurpassable, upper, vague, whole