forethink in English dictionary forethink Meanings and definitions of "forethink" (transitive, rare) To plan (something) in advance; think, consider, or contrive beforehand; prognosticate. (intransitive, rare) To think about beforehand; to anticipate. verb (transitive, rare) To plan (something) in advance; think, consider, or contrive beforehand; prognosticate. verb (transitive, rare) To think about beforehand; to anticipate. more Grammar and declension of forethink forethink ( third-person singular simple present forethinks, present participle forethinking, simple past and past participle forethought) forethink (third-person singular simple present forethinks, present participle forethinking, simple past and past participle forethought) more Sample sentences with "forethink" Declension Stem Try again Available translations Russian Authors