Incline to be angular? (4)
I believe the answer is:
lean
This clue is a triple definition!
'incline' is the first definition.
('lean' can be a synonym of 'incline')
'to be' is the second definition.
(leaning is a kind of being)
'angular?' is the third definition.
(thesaurus)
(Other definitions for lean that I've seen before include "director in past" , "Wiry" , "Meagre" , "With no fat; slope" , "unremunerative" .)