THEREUPON Meaning of THEREUPON in English thereupon BrE AmE ˌðeər ə ˈpɒn ˈ••ˌ• AmE \ ˌðer ə ˈpɑːn ˌðær-, -ˈpɔːn Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012