thereupon
[adverb]
Synonyms: thereon, therefore, accordingly, consequently, ergo, hence, so, then, thus

[TahlilGaran] English Synonym Dictionary ▲

there‧up‧on /ˌðeərəˈpɒn, ˈðeərəpɒn $ ˌðerəˈpɒːn, -ˈpɑːn, ˈðerə-/ adverb formal

1. immediately after something else has happened, and usually as a result of it Synonym : then:
Thereupon the whole audience began cheering.

2. relating to a subject that has just been mentioned:
I read your article, and wish to comment thereupon.

[TahlilGaran] Dictionary of Contemporary English ▲