Pronunciation

/ˌəˈpɒn/

Definitions

Preposition

• Upon: A preposition indicating a position or action on or in relation to something. It can be used to show location, time, or condition.

Verb

• Upon (with ‘to’): Expresses an action that takes place as a result or upon completion of another action. For example: “I will act upon your advice.”

Adverb

• Upon: Occasionally used as an adverb to emphasize the immediacy or directness of an action. For example: “She immediately acted upon his suggestion.”

Phrases

• “Upon arriving” indicates when something happens after arrival.
• “Upon seeing him” describes an action triggered by seeing someone.
• “Upon reflection” suggests thinking about something before taking action.
• “Upon request” means in response to a specific request.

Example Sentences

• Preposition: “The book is upon the table.”
• Verb: “Upon hearing the news, she burst into tears.”
• Adverb: “Upon reaching the top of the mountain, the view was breathtaking.”

Synonyms

• On
• Above
• Over
• At
• In
• Upon (less commonly)

Usage Notes

• “Upon” can be followed by a noun, gerund, or clause, depending on the context.
• It’s often used in idiomatic expressions like “upon entering,” “upon reflection,” or “upon waking up.”