Dense

dense
    adj 1: permitting little if any light to pass through because of
           denseness of matter; "dense smoke"; "heavy fog";
           "impenetrable gloom" [syn: {dense}, {heavy},
           {impenetrable}]
    2: hard to pass through because of dense growth; "dense
       vegetation"; "thick woods" [syn: {dense}, {thick}]
    3: having high relative density or specific gravity; "dense as
       lead"
    4: slow to learn or understand; lacking intellectual acuity; "so
       dense he never understands anything I say to him"; "never met
       anyone quite so dim"; "although dull at classical learning,
       at mathematics he was uncommonly quick"- Thackeray; "dumb
       officials make some really dumb decisions"; "he was either
       normally stupid or being deliberately obtuse"; "worked with
       the slow students" [syn: {dense}, {dim}, {dull}, {dumb},
       {obtuse}, {slow}]
    

Dense \Dense\, a. [L. densus; akin to Gr. ? thick with hair or
   leaves: cf. F. dense.]
   1. Having the constituent parts massed or crowded together;
      close; compact; thick; containing much matter in a small
      space; heavy; opaque; as, a dense crowd; a dense forest; a
      dense fog.
      [1913 Webster]

            All sorts of bodies, firm and fluid, dense and rare.
                                                  --Ray.
      [1913 Webster]

            To replace the cloudy barrier dense.  --Cowper.
      [1913 Webster]

   2. Stupid; gross; crass; as, dense ignorance.
      [1913 Webster]
    

161 Moby Thesaurus words for "dense":
      Boeotian, adamantine, asinine, beef-brained, beef-witted,
      blockheaded, blockish, bony, bovine, bristling, broad-bodied,
      bulky, bullnecked, cement, cemental, chumpish, cloddish, close,
      close-knit, close-textured, close-woven, coarse, compact,
      compacted, compressed, concentrated, concrete, condensed,
      congested, consolidated, corneous, corpulent, cowish, crammed,
      crammed full, crass, crawling, crowded, diamondlike, dim,
      dim-witted, doltish, dull, dullard, dumb, duncical, duncish,
      durable, dure, enduring, exuberant, fat, fatheaded, firm,
      flintlike, flinty, flourishing, foolish, full, full-bodied, gluey,
      granitelike, granitic, gross, hard, hard as nails, hardhearted,
      heaped, heavy, heavyset, horny, impassable, impassive,
      impenetrable, impermeable, ineducable, iron-hard, ironlike,
      jam-packed, jammed, jungled, jungly, klutzy, lapideous, lasting,
      lethargic, lithoid, lithoidal, lumpish, lush, luxuriant, marble,
      marblelike, massed, massive, nonporous, numskulled, oafish,
      obdurate, obtuse, opaque, osseous, overgrown, overrun, packed,
      phlegmatic, piled, populous, rank, resistant, resistive, riotous,
      rocklike, rocky, rugged, serried, slow, slow-witted, sluggish,
      solid, sottish, sound, stable, steady, steellike, steely, stolid,
      stonelike, stony, stout, strong, stupid, sturdy, substantial,
      swarming, teeming, thick, thick-bodied, thick-growing,
      thick-witted, thickheaded, thickset, three-dimensional, tight,
      torpid, tough, unteachable, unweeded, unyielding, viscid, viscose,
      viscous, weed-choked, weed-ridden, weedy, well-built,
      well-constructed, well-founded, well-grounded, well-made,
      wrongheaded