1.Verbsimple past and past participle of premeditate
2.AdjectivePlanned, 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."