adverb
- immediately after which; as a consequence of which
Usage: formal
Examples
- The witness refused to testify, whereupon the judge held him in contempt.
- She submitted her resignation, whereupon her boss asked her to reconsider.
- The power went out, whereupon everyone began searching for flashlights.
- He made an insulting comment, whereupon she left the room.
- The contract was signed, whereupon construction began immediately.
- The alarm sounded, whereupon all employees evacuated the building.