untreated

untreated
    adj 1: not given medical care or treatment; "an untreated
           disease"; "the untreated wounded lay on makeshift cots"
           [ant: {treated}]
    2: not subjected to chemical or physical treatment; "an
       untreated fabric" [ant: {treated}]
    3: (of a specimen for study under a microscope) not treated with
       a reagent or dye
    

36 Moby Thesaurus words for "untreated":
      arrested, backward, coarse, crude, embryonic, in embryo, in ovo,
      in the rough, oversimple, reductionistic, reductive, rough,
      roughcast, roughhewn, rude, rudimental, rudimentary, simplistic,
      stunted, unblown, uncultivated, uncultured, uncut, underdeveloped,
      undeveloped, unfashioned, unfinished, unformed, unhewn, unlabored,
      unlicked, unpolished, unprocessed, unrefined, unworked,
      unwrought