Lean attitude? (5)
I believe the answer is:
slant
I believe this clue is a double definition.
'lean' is the first definition.
(I know that lean can be written as slant)
'attitude?' is the second definition.
(slant is a kind of attitude)
(Other definitions for slant that I've seen before include "Angle; make oblique" , "Viewpoint; slope" , "It's at an angle to the horizontal" , "Slope, lean" , "Inclination" .)