| untreated | (adj) not given medical care or treatment, Ant. treated, Example: an untreated disease; the untreated wounded lay on makeshift cots |
| untreated | (adj) not subjected to chemical or physical treatment, Ant. treated, Example: an untreated fabric |
| untreated | (adj) (of a specimen for study under a microscope) not treated with a reagent or dye |
| Untreatable | a. Incapable of being treated; not practicable. [ R. ] Dr. H. More. [ 1913 Webster ] |