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upon

[uh-pon, uh-pawn] / əˈpɒn, əˈpɔn /
PREPOSITION
at the time of
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The new facility will be North Korea’s largest publicly known uranium enrichment site upon completion.

From The Wall Street Journal • Jun. 10, 2026

In moments when opportunity is cloaked in nuance, we have long relied upon John Marshall, Goldman Sachs’ derivatives strategist.

From Barron's • Jun. 10, 2026

What fabulous representatives these are of the country that Europe once looked upon with gratitude and respect: clownish, crude and stupid all at once.

From Salon • Jun. 9, 2026

Once upon a time, a dynamic young entrepreneur came to him with a brilliant idea that, on paper, could revolutionize healthcare diagnoses and reduce costs exponentially.

From MarketWatch • Jun. 8, 2026

Duane also didn’t know that the contraption standing beside the man was an easel, and the square of white sitting upon it was an empty canvas.

From "The Very, Very Far North" by Dan Bar-el




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