THEREUPON', adverb [there and upon.] Upon that or this. The remnant of the house of Judah, they shall feed thereupon Zephaniah 2:7. 1. In consequence of that. He hopes to find you forward, And thereupon he sends you this good news. 2. Immediately.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI