IPA: /əˈfɔːrθɔːt/
KK: /əˈfɔrˌθɔt/
Something that is planned or intended before it happens.
The crime was committed with malice aforethought, indicating a deliberate intention to harm.
Aforethought → It is formed from "a-" (meaning before) and "forethought" (from Old English "forþoht", meaning thought or consideration). The word "aforethought" means having thought or consideration beforehand.
Think of having a 'thought' ('forethought') 'before' ('a-') something happens — that's why 'aforethought' means to think ahead.