Unwashed \Un*washed"\, a. Not washed or cleansed; filthy; unclean. [1913 Webster] [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

40 Moby Thesaurus words for "unwashed": base, baseborn, canaille, contaminated, corrupted, dirty, dregs, humble, impure, infected, low, lowborn, lowly, masses, mean, mob, nonkosher, plebeian, polluted, proletariat, ragtag and bobtail, riffraff, ritually unclean, scum, the great unwashed, the masses, the mob, the populace, the population, trash, tref, unbathed, unclean, uncleaned, uncleanly, unpure, unscoured, unscrubbed, unswept, unwiped

Source: Moby Thesaurus II by Grady Ward, 1.0
 

unwashed adj
1: of or associated with the great masses of people; "the common people in those days suffered greatly"; "behavior that branded him as common"; "his square plebeian nose"; "a vulgar and objectionable person"; "the unwashed masses" [syn: common, plebeian, vulgar]
2: not cleaned with or as if with soap and water; "a sink full of unwashed dishes"

Source: WordNet (r) 2.0
 

Unwashed \Un*washed"\, a. Not washed or cleansed; filthy; unclean.

Source: Webster's Revised Unabridged Dictionary (1913)