WordNet sense 1 (untouched or undefiled):

virginal

WordNet sense 2 (free from admixture with noxious elements; clean):

uncontaminated, unpolluted

WordNet sense 3 (free from admixture):

unalloyed

WordNet sense 4 (not mixed with impurities):

unadulterated

WordNet sense 5 (made pure):

refined

WordNet sense 6 (completely free from dirt or contamination):

pristine

WordNet sense 7 (not mixed with extraneous elements):

plain, sheer, unmixed

WordNet sense 8 (free from impurities; having a high or specified degree of purity):

fine, fine

WordNet sense 9 ((of sound or color) free from anything that dulls or dims):

clean, clear

WordNet sense 10 (free from impurities):

fresh

WordNet sense 11 (free from moral blemish or impurity; unsullied):

white

WordNet sense 12 (free from stain or blemish):

immaculate, undefiled

WordNet sense 13 (without qualification; used informally as (often pejorative) intensifiers):

arrant, complete, consummate, everlasting, gross, perfect, stark, thoroughgoing, utter, double-dyed, sodding, staring, consummate, perfect

WordNet sense 14 (not diminished or moderated in intensity or severity; sometimes used as an intensifier):

unmitigated

WordNet sense 15 (musically pleasing):

harmonious

WordNet sense 16 ((of color) being chromatically pure; not diluted with white or grey or black):

saturated

WordNet sense 17 (in a state of sexual virginity):

vestal, virgin, virtuous

WordNet sense 18 (morally pure (especially not having experienced sexual intercourse)):

chaste