The Collaborative International Dictionary of English v.0.48:

Wax \Wax\ (w[a^]ks), v. i. [imp. Waxed; p. p. Waxed, and
   Obs. or Poetic Waxen; p. pr. & vb. n. Waxing.] [AS.
   weaxan; akin to OFries. waxa, D. wassen, OS. & OHG. wahsan,
   G. wachsen, Icel. vaxa, Sw. v[aum]xa, Dan. voxe, Goth.
   wahsjan, Gr. ? to increase, Skr. waksh, uksh, to grow.
   [root]135. Cf. Waist.]
   [1913 Webster]
   1. To increase in size; to grow bigger; to become larger or
      fuller; -- opposed to wane.
      [1913 Webster]

            The waxing and the waning of the moon. --Hakewill.
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            Truth's treasures . . . never shall wax ne wane.
                                                  --P. Plowman.
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   2. To pass from one state to another; to become; to grow; as,
      to wax strong; to wax warmer or colder; to wax feeble; to
      wax old; to wax worse and worse.
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            Your clothes are not waxen old upon you. --Deut.
                                                  xxix. 5.
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            Where young Adonis oft reposes,
            Waxing well of his deep wound.        --Milton.
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   Waxing kernels (Med.), small tumors formed by the
      enlargement of the lymphatic glands, especially in the
      groins of children; -- popularly so called, because
      supposed to be caused by growth of the body. --Dunglison.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Waxen \Wax"en\, a.
   1. Made of wax. "The female bee, that . . . builds her waxen
      cells." --Milton.
      [1913 Webster]

   2. Covered with wax; waxed; as, a waxen tablet.
      [1913 Webster]

   3. Resembling wax; waxy; hence, soft; yielding.
      [1913 Webster]

            Men have marble, women waxen, minds.  --Shak.
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   Waxen chatterer (Zool.), the Bohemian chatterer.
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WordNet (r) 3.0 (2006):

waxen
    adj 1: made of or covered with wax; "waxen candles"; "careful,
           the floor is waxy" [syn: waxen, waxy]
    2: having the paleness of wax; "the poor face with the same
       awful waxen pallor"- Bram Stoker; "the soldier turned his
       waxlike features toward him"; "a thin face with a waxy
       paleness" [syn: waxen, waxlike, waxy]

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "waxen":
   achromatic, achromic, anemic, ashen, ashy, blanched, bled white,
   bloodless, cadaverous, chloranemic, colorless, dead, deadly pale,
   deathly pale, dim, dimmed, dingy, discolored, doughy, dull,
   etiolated, exsanguinated, exsanguine, exsanguineous, faded, faint,
   fallow, flat, ghastly, gray, haggard, hueless, hypochromic,
   lackluster, leaden, livid, lurid, lusterless, mat, mealy, muddy,
   neutral, pale, pale as death, pale-faced, pallid, pasty, sallow,
   sickly, tallow-faced, toneless, uncolored, wan, washed-out, weak,
   whey-faced, white