plotting
v.v. secretly planning to do something, usually something bad or illegal. It can also mean marking points on a map or graph to show a path or data.
v. secretly devising a plan to achieve a specific, often illicit, outcome. Also refers to the act of marking points on a chart or coordinate system to represent a sequence or relationship.
They are plotting a surprise party for their friend.
The detectives discovered that the group had been plotting the bank robbery for several months.
By carefully plotting the movement of the stars over several weeks, the ancient navigators were able to determine their exact position at sea with surprising accuracy.
The verb is transitive when referring to a plan or a graph; it can be intransitive when describing the general act of conspiring.
They are plotting for a crime.They are plotting a crime.When 'plot' means to plan something, it is transitive and does not require the preposition 'for'.