Whereat

adv.	1.	At which; upon which; whereupon; - used relatively. They vote; whereat his speech he thus renews. - Milton. Whereat he was no less angry and ashamed than desirous to obey Zelmane. - Sir P. Sidney.
	2.	At what; - used interrogatively; as, whereat are you offended?

Adv.	1.	whereat - in consequence of which; "this is a statement whereat the listeners may get angry" Synonyms: whereupon
	2.	whereat - at or toward which; "we were at a party whereat there was lots of dancing"

whereupon