Systematic (8)
'systematic' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for methodical that I've seen before include "following a set pattern" , "Systematic" , "Orderly" .)
'systematic' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for methodic that I've seen before include "Working in an ordered way" , "Working in an orderly manner" .)