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Definitions

upon

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


Example Sentences

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Lisa Kushner still recalls the fear and anxiety she felt upon learning she was pregnant.

From Salon Sep. 7, 2026

Vorcaro told police he had "friends in all branches of government" upon his arrest last year.

From Barron's Sep. 5, 2026

Its leaders have been warning for years that its resources did not match the demands placed upon it.

From BBC Sep. 4, 2026

But the regulator wants to examine the process and technical data that Tesla relied upon to make the compliance claim, according to the filing.

From The Wall Street Journal Sep. 4, 2026

Magic shouted with glee, not caring in the least what the trick was or upon whom it was to be played.

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




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