Thereat is an adverb that means at that place or at that point in time. It can be replaced with synonyms like thereafter, subsequently, subsequently to that, next, next to that, afterwards, afterward, and later on. These words denote an event or action that occurs after the current time or location, either in a linear or chronological sequence. The use of any of these words can provide clarity and precision in writing and speaking, particularly in legal documents, narrations, and lectures. Overall, it is essential to use appropriate synonyms for thereat to ensure the coherence and coherence of your discourse.