The Collaborative International Dictionary of English v.0.48:

Mat \Mat\, v. t. [imp. & p. p. Matted; p. pr. & vb. n.
   Matting.]
   1. To cover or lay with mats. --Evelyn.
      [1913 Webster]

   2. To twist, twine, or felt together; to interweave into, or
      like, a mat; to entangle.
      [1913 Webster]

            And o'er his eyebrows hung his matted hair.
                                                  --Dryden.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Matted \Mat"ted\, a. [See 3d Mat.]
   1. Covered with a mat or mats; as, a matted floor.
      [1913 Webster]

   2. Tangled closely together; having its parts adhering
      closely together; as, matted hair.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Matted \Mat"ted\, a. [See Matte.]
   Having a dull surface; lusterless; unburnished; same as
   matte; as, matted gold leaf or gilding.
   [1913 Webster]

   Matted glass, glass ornamented with figures on a dull
      ground.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

entangled \entangled\ adj.
   1. in a confused mass. Contrasted with untangled. [Narrower
      terms: afoul(postnominal), foul, fouled; knotted,
      snarled, snarly; matted; rootbound; intertwined]

   Syn: tangled.
        [WordNet 1.5]

   2. deeply involved especially in something problematic; as,
      entangled in the conflict.

   Syn: embroiled.
        [WordNet 1.5]

   3. constrained by or as if by a convoluted rope or net;
      ensnared.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

matted
    adj 1: tangled in a dense mass; "tried to push through the
           matted undergrowth"
    2: not reflecting light; not glossy; "flat wall paint"; "a
       photograph with a matte finish" [syn: flat, mat, matt,
       matte, matted]

Moby Thesaurus II by Grady Ward, 1.0:

64 Moby Thesaurus words for "matted":
   Byzantine, balled up, bristly, bushy, cirrose, complex,
   complicated, confounded, confused, convoluted, crabbed, daedal,
   devious, disheveled, elaborate, embrangled, entangled, fleecy,
   flocculent, fouled up, furry, fuzzy, hairy, hirsute, hispid,
   implicated, intricate, involuted, involved, knotted, labyrinthian,
   labyrinthine, lanate, loused up, many-faceted, mazy, meandering,
   messed up, mixed up, mucked up, multifarious, mussed up, perplexed,
   pilose, pubescent, ramified, roundabout, ruffled, rumpled,
   screwed up, shagged, shaggy, snaggy, snarled, subtle, tangled,
   tangly, tousled, tously, tumbled, twisted, uncombed, unshorn,
   woolly