Tendency or inclination (7)
I believe the answer is:
leaning
I believe this is a double definition.
'tendency' is the first definition.
(I know that leaning is a type of tendency)
'inclination' is the second definition.
(incline can mean to lean)
(Other definitions for leaning that I've seen before include "Tendency, partiality" , "Like a tower in Pisa" , "Inclination" , "Inclining, slanting" , "Inclined" .)