NOT MIXED › A pure substance is not mixed with anything else: pure gold pure wool
EMPHASIS [always before noun] › used to emphasize that a feeling, quality, or state is completely and only that thing: pure coincidence Her face had a look of pure delight.
CLEAN › clean and healthy: pure air/water
pure mathematics/physics, etc › the study of mathematics/physics, etc based only on ideas and not on practical use
GOOD › completely good and not having any bad qualities or bad morals