Not so hefty (6)
I believe the answer is:
(Other definitions for leaner that I've seen before include "less bulky" , "less corpulent?" , "less productive" , "One with an inclination" , "Thinner, with less fat" .)
I believe the answer is:
(Other definitions for leaner that I've seen before include "less bulky" , "less corpulent?" , "less productive" , "One with an inclination" , "Thinner, with less fat" .)