WordNet sense 1 (made free from live bacteria or other microorganisms):

sterilised, sterilized

WordNet sense 2 (free from germs or pathogenic organisms; sterile):

germfree

WordNet sense 3 (free from sepsis or infection):

clean

WordNet sense 4 (free of or using methods to keep free of pathological microorganisms):

sterile

WordNet sense 5 (free of corruption or immorality):

incorrupt

WordNet sense 6 ((of behavior or especially language) free from objectionable elements; fit for all observers):

unobjectionable