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Definitions

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.

Perhaps others in the area have stumbled upon the mysterious flute man themselves, or can recall the smell of monomer from a nail salon at the Redlands Mall.

From Los Angeles Times • Apr. 9, 2026

Depending on how that is interpreted and acted upon, however, could violate international agreements on space exploration.

From Salon • Apr. 9, 2026

"Willingness is a huge ingredient in a successful team," said the Artemis II crewmember, who added he can't wait to share more images and experiences with the people of Canada upon return.

From Barron's • Apr. 9, 2026

The court heard Roberts spent 22 "exemplary" years in the Army serving in Yugoslavia, Northern Ireland, Iraq and Afghanistan, then upon his release immediately joined Durham Police before moving to Northumbria in 2017.

From BBC • Apr. 7, 2026

Looking down upon the water, Duane took notice of its great width.

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