IPA: /fɔːrˈθɔːt.fəl/
KK: /fɔrˈθɔt̬fəl/
Having careful thought or consideration about the future; being thoughtful in planning ahead.
Her forethoughtful approach to the project helped the team avoid many potential problems.
Comparative: more forethoughtful
Superlative: most forethoughtful
Forethoughtful → It is formed from "fore-" (meaning before) and "thoughtful" (from "thought" which comes from Old English "þoht", meaning the process of thinking, and "-ful" meaning full of). The word "forethoughtful" means being full of thought or consideration before an action is taken.
Think of being 'full of thought' ('thoughtful') before something happens ('fore-') — that's why forethoughtful means being considerate ahead of time.