| adv. | 1. | Upon that or this; thereon. |
| 2. | On account, or in consequence, of that; therefore. | |
| 3. | Immediately; at once; without delay. |
| Adv. | 1. | thereupon - immediately after that; "thereupon the entire class applauded"; "with that, she left the room"; "I therewith withdraw my complaints" |