The term "forethought" refers to the act of thinking or planning ahead. Its antonyms signify the opposite of forethought or the lack of preparation. Some antonyms for "forethought" include recklessness, impulsiveness, carelessness, negligence, thoughtlessness, and rashness. Individuals who lack forethought tend to act spontaneously without considering the consequences of their actions. They are reactive rather than proactive and often make hasty decisions without weighing the potential outcomes. Therefore, it is crucial to practice forethought in daily life to achieve success and avoid potential pitfalls. In conclusion, antonyms of forethought represent the need to be mindful, strategic, and premeditated to achieve desirable outcomes.