upon
/əˈpɑn/
preposition
- On; used to show that something is in a position above and touching something else.
- The cat jumped upon the windowsill.
- She placed the book upon the table.
- He rested his head upon the pillow.
- Immediately after or as a result of something.
- The meeting ended upon the arrival of the CEO.
- Upon hearing the news, she burst into tears.
- Upon finishing the race, he collapsed from exhaustion.
- Used to indicate a particular time or occasion.
- Upon my arrival, I was greeted warmly.
- The contract was signed upon the first day of the month.
- Upon reflection, I realized I had made a mistake.
Synonyms