Plotter (11)
'plotter' is the definition.
(synonyms)
This is all the clue.
(Other definitions for conspirator that I've seen before include "Planner in secret" , "Person who secretly plots with others" , "Secret plotter" .)
'plotter' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for schemer that I've seen before include "He plots and plans" , "Plotter, conspirator" , "Plotter and planner" , "Cunning planner" , "Machiavelli" .)