immediately after that; "thereupon the entire class applauded"; "with that, she left the room"; "I therewith withdraw my complaints
Thereupon means happening immediately after something else has happened and usually as a result of it. Some months ago angry demonstrators mounted a noisy demonstration beneath his window. His neighbours thereupon insisted upon more security
immediately after that; "thereupon the entire class applauded"; "with that, she left the room"; "I therewith withdraw my complaints"