adjectives
not given medical care or treatment
"an untreated disease"; "the untreated wounded lay on makeshift cots"
not subjected to chemical or physical treatment
"an untreated fabric"
is similar to
not processed or refined
"raw sewage"
see also
not altered from an original or natural state
"unprocessed commodities"
(of a specimen for study under a microscope) not treated with a reagent or dye
is similar to
not stained
"An apron keeps his clothing unstained"