1) Capable of being graded 2) Hierarchal 3) Hierarchic 4) Hierarchical 1) Hierarchal 2) Hierarchic 3) Hierarchical 
[adj] - capable of being graded (for quality or rank or size etc.)
adjective capable of being graded (for quality or rank or size etc.)
A reference to certain adjectives which can show a degree of a quality rather than presence or absence, for instance small is gradable as one can say 'quite small', 'fairly small'. This term contrasts explicitly with non-gradable.