Meaning of the word upon in English

What does upon mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

upon

US /əˈpɑːn/
UK /əˈpɒn/
"upon" picture

Preposition

1.

more formal term for on, especially in abstract senses

Example:
•
The decision was based upon careful consideration.
•
He placed the book upon the table.
Synonym:
2.

indicating a time immediately or very soon after something

Example:
•
Upon arrival, please report to the front desk.
•
He started crying upon hearing the news.