More indolent (6)
I believe the answer is:
lazier
'more indolent' is the definition.
('lazy' can be a synonym of 'indolent')
This is all the clue.
(Other definitions for lazier that I've seen before include "More lethargic or sluggish" , "less inclined to work" , "More idle" , "More indolent or slothful" , "More like a couch potato" .)