upon (A2)

preposition

Pronunciation: /əˈpɒn/

Definition

On or to the surface of something.

Examples

• The book lay open upon the desk.

• He placed his hand gently upon her shoulder.

• The castle stood upon a high hill, overlooking the valley.

How to Use upon

upon arrival (collocation)

When someone arrives at a place. — "Upon arrival at the hotel, we were greeted with warm towels."

upon reflection (collocation)

After thinking carefully about something. — "Upon reflection, I realized that my initial decision was hasty."

upon hearing (collocation)

Immediately after hearing some news or sound. — "Upon hearing the alarm, the students evacuated the building calmly."

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