Aforethought is an adjective that means premeditated or deliberate.

Our word of the day combines the prefix A-F-O-R-E, meaning ‘before’ with the common English word ‘thought.’ Together they refer to something thought out in advance. The word is frequently used in legal proceedings in reference to criminal behavior that is premeditated. For example: The jury felt Carol let her gerbil loose on Robin’s hamster with malice aforethought. But knowing Carol as well as I do, I find it hard to believe she would deliberately harm Robin’s hamster like that.