[1] : The Collaborative International Dictionary of English v.0.48

unclean \unclean"\ u^nkl=en", a. as. uncl=aene. see
   unnot, and clean.
   1. not clean; foul; dirty; filthy.
      1913 webster

   2. ceremonially impure; needing ritual cleansing.
      1913 webster

            he that toucheth the dead body of any man shall be
            unclean seven days.                   --num. xix.
                                                  11.
      1913 webster

   3. morally impure. "adultery of the heart, consisting of
      inordinate and unclean affections." --perkins.
      1913 webster -- unclean"ly, adv. -- unclean"ness,
      n.
      1913 webster

   unclean animals script., those which the israelites were
      forbidden to use for food.

   unclean spirit script., a wicked spirit; a demon. --mark
      i. 27.
      1913 webster
see also:
unnot clean unclean"ly unclean"ness unclean animals unclean spirit 

[2] : WordNet (r) 2.0

unclean
     adj 1: soiled or likely to soil with dirt or grime; "dirty unswept
            sidewalks"; "a child in dirty overalls"; "dirty
            slums"; "piles of dirty dishes"; "put his dirty feet
            on the clean sheet"; "wore an unclean shirt"; "mining
            is a dirty job"; "cinderella did the dirty work while
            her sisters preened themselves" syn: dirty, soiled
            ant: clean
     2: ritually unclean or impure; "and the swine...is unclean to
        you"-leviticus 11:3 syn: impure ant: clean
see also:
dirty soiled clean impure 

[3] : Moby Thesaurus II by Grady Ward, 1.0

146 moby thesaurus words for "unclean":
   adamic, fescennine, rabelaisian, abominable, arrant, atrocious,
   awful, backsliding, base, bawdy, beastly, beneath contempt,
   besmirched, black, blameworthy, blue, brutal, carnal, common,
   contaminated, contemptible, corrupted, defiled, deplorable,
   despicable, detestable, dire, dirty, disgusting, dreadful,
   egregious, enormous, erring, fallen, fetid, filthy, flagrant,
   fleshly, foul, foul-mouthed, foul-spoken, foul-tongued, frail,
   fulsome, grievous, gross, grubby, hateful, heinous, horrible,
   horrid, immoral, impure, indecent, infamous, infected, infirm,
   ithyphallic, lamentable, lapsed, lewd, loathsome, lousy, lurid,
   maculate, monstrous, nasty, nefarious, noisome, nonkosher,
   notorious, obnoxious, obscene, odious, of easy virtue, offensive,
   outrageous, peccable, pitiable, pitiful, polluted, pornographic,
   postlapsarian, prodigal, rank, raunchy, recidivist, recidivistic,
   regrettable, reprehensible, repulsive, ribald, ritually unclean,
   rotten, sad, salacious, scandalous, schlock, scurrile, scurrilous,
   scurvy, shabby, shameful, shocking, shoddy, smirched, smoking-room,
   smutty, soiled, soily, sordid, squalid, sullied, sultry, tainted,
   terrible, too bad, tref, unangelic, unbathed, unchaste, uncleanly,
   ungodly, ungood, unprintable, unpure, unrepeatable, unrighteous,
   unsaintly, unscoured, unscrubbed, unswept, unvirginal, unvirtuous,
   unwashed, unwiped, vile, villainous, virtueless, wanton, wayward,
   weak, woeful, worst, worthless, wretched

Unclean >> U Words
Unclean, definition of term: Unclean
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