WHEREUPON Meaning of WHEREUPON in English whereupon BrE AmE ˌweə r ə ˈpɒn ˌhweə r -, ˈ••• AmE \ ˌwer ə ˈpɑːn ˌhwer-, ˌwær-, ˌhwær-, -ˈpɔːn Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012