The Collaborative International Dictionary of English v.0.48:

Seem \Seem\ (s[=e]m), v. i. [imp. & p. p. Seemed (s[=e]md); p.
   pr. & vb. n. Seeming.] [OE. semen to seem, to become,
   befit, AS. s[=e]man to satisfy, pacify; akin to Icel. saema
   to honor, to bear with, conform to, saemr becoming, fit,
   s[=o]ma to beseem, to befit, sama to beseem, semja to
   arrange, settle, put right, Goth. samjan to please, and to E.
   same. The sense is probably due to the adj. seemly.
   [root]191. See Same, a., and cf. Seemly.]
   To appear, or to appear to be; to have a show or semblance;
   to present an appearance; to look; to strike one's
   apprehension or fancy as being; to be taken as. "It now
   seemed probable." --Macaulay.
   [1913 Webster]

         Thou picture of what thou seem'st.       --Shak.
   [1913 Webster]

         All seemed well pleased; all seemed, but were not all.
                                                  --Milton.
   [1913 Webster]

         There is a way which seemeth right unto a man; but the
         end thereof are the ways of death.       --Prov. xiv.
                                                  12.
   [1913 Webster]

   It seems, it appears; it is understood as true; it is said.
      [1913 Webster]

            A prince of Italy, it seems, entertained his
            mistress on a great lake.             --Addison.
      [1913 Webster]

   Syn: To appear; look.

   Usage: Seem, Appear. To appear has reference to a thing's
          being presented to our view; as, the sun appears; to
          seem is connected with the idea of semblance, and
          usually implies an inference of our mind as to the
          probability of a thing's being so; as, a storm seems
          to be coming. "The story appears to be true," means
          that the facts, as presented, go to show its truth;
          "the story seems to be true," means that it has the
          semblance of being so, and we infer that it is true.
          "His first and principal care being to appear unto his
          people such as he would have them be, and to be such
          as he appeared." --Sir P. Sidney.
          [1913 Webster]

                Ham. Ay, madam, it is common.
                Queen. If it be,
                Why seems it so particular with thee?
                Ham. Seems, madam! Nay, it is; I know not
                "seems."                          --Shak.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Seeming \Seem"ing\, a.
   Having a semblance, whether with or without reality;
   apparent; specious; befitting; as, seeming friendship;
   seeming truth.
   [1913 Webster]

         My lord, you have lost a friend indeed;
         And I dare swear you borrow not that face
         Of seeming sorrow, it is sure your own.  --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Seeming \Seem"ing\, n.
   1. Appearance; show; semblance; fair appearance;
      speciousness.
      [1913 Webster]

            These keep
            Seeming and savor all the winter long. --Shak.
      [1913 Webster]

   2. Apprehension; judgment. [Obs.] --Chaucer.
      [1913 Webster]

            Nothing more clear unto their seeming. --Hooker.
      [1913 Webster]

            His persuasive words, impregned
            With reason, to her seeming.          --Milton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

seeming
    adj 1: appearing as such but not necessarily so; "for all his
           apparent wealth he had no money to pay the rent"; "the
           committee investigated some apparent discrepancies"; "the
           ostensible truth of their theories"; "his seeming
           honesty" [syn: apparent(a), ostensible, seeming(a)]

Moby Thesaurus II by Grady Ward, 1.0:

205 Moby Thesaurus words for "seeming":
   Barmecidal, Barmecide, Prospero, acting, affectation, airiness,
   airy, alleged, angle, apparent, apparitional, appearance,
   appearing, aspect, assumed, attitudinizing, autistic, bearing,
   bluff, bluffing, cheating, chimeric, color, colorable, colored,
   coloring, configuration, cortical, deception, deceptive, delusion,
   delusional, delusionary, delusive, delusiveness, delusory,
   demeanor, dereistic, disguise, dissemblance, dissembling,
   dissimulation, dreamlike, dreamy, effect, eidolon, epidermic,
   erroneous, evident, exomorphic, exterior, exteriority, external,
   externality, externalness, extrinsic, extrinsicality, facade, face,
   facet, fakery, faking, fallacious, fallaciousness, false,
   false air, false appearance, false face, false front, false light,
   false show, falseness, falsity, fantastic, fashion, feature,
   feigned, feigning, feint, figure, foreignness, form, four-flushing,
   fraud, fringe, front, gestalt, gilded, gilt, gloss, guise, humbug,
   humbuggery, idealization, illusion, illusional, illusionary,
   illusionism, illusionist, illusive, illusiveness, illusory, image,
   imaginary, imago, immateriality, imposture, impression, light,
   likeness, lineaments, look, magic, magic act, magic show, magician,
   manner, masquerade, meretricious, meretriciousness, mien,
   misleading, open, openness, ostensible, ostentation, out, outer,
   outermost, outerness, outlying, outmost, outside, outstanding,
   outward, outward appearance, outward show, outward-facing,
   outwardness, peripheral, phantasmagoric, phantasmal, phantom,
   phase, phasis, plausible, playacting, pose, posing, posture,
   prestidigitation, pretended, pretense, pretension, pretext,
   professed, public, purported, reference, regard, representation,
   respect, roundabout, self-deceptive, self-deluding, semblance,
   shallowness, sham, shape, show, showing, side, simulacrum,
   simulation, slant, sleight of hand, so-called, sorcerer, sorcery,
   specious, specious appearance, speciousness, spectral, style,
   superficial, superficiality, supposititious, surface, tinsel,
   total effect, twist, unactual, unactuality, unfounded, unreal,
   unreality, unsubstantial, unsubstantiality, varnish, view,
   viewpoint, visible, visionary, window dressing, wise