Smooth, well-defined (5)
I believe the answer is:
clean
(Other definitions for clean that I've seen before include "Absolute - pure" , "not polluted" , "Untarnished" , "Devoid of dirt" , "thoroughly" .)
I believe the answer is:
clean
(Other definitions for clean that I've seen before include "Absolute - pure" , "not polluted" , "Untarnished" , "Devoid of dirt" , "thoroughly" .)