Premeditated vs Aforethought - What's the difference?

Aforethought is a synonym of premeditated.

is that premeditated is planned, considered or estimated in advance; deliberate while aforethought is premeditated; planned ahead of time.

is past tense of premeditate.

(head)

(premeditate)

(-)

Planned, considered or estimated in advance; deliberate.

premeditated assault

a premeditated act of aggression

a premeditated breach of contract

in the face of premeditated criminal acts

caused by grossly negligent or premeditated infringement of duty

There is no proof of premeditated or grossly negligent wrongdoing.

* unpremeditated

(-)

Premeditated; planned ahead of time.

This was not merely wrong; it was clearly done with malice aforethought .

Unlike most English adjectives, (aforethought) is a postpositive adjective and immediately follows the noun it modifies.

* (premeditated) planned, premeditated