Make thin; weaken (9)
I believe the answer is:
attenuate
(Other definitions for attenuate that I've seen before include "Reduced" , "Reduce in strength" , "Reduce (a signal)" , "become weak" , "Spin out" .)
I believe the answer is:
attenuate
(Other definitions for attenuate that I've seen before include "Reduced" , "Reduce in strength" , "Reduce (a signal)" , "become weak" , "Spin out" .)