Thesaurus.com
Dictionary.com
Showing results for upon. Search instead for upcu.
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.

It’s the latter portion — “subject to the jurisdiction thereof” — that leaves room for interpretation, forming the beachhead upon which legal arguments against birthright citizenship have been mounted.

From Salon • Apr. 4, 2026

It became the bedrock upon which Palantir built its Artificial Intelligence Platform.

From MarketWatch • Apr. 4, 2026

Throughout “Those Who Are About to Die,” the reader comes upon fascinating generalizations, usually introduced by attention-arousing brief sentences.

From The Wall Street Journal • Apr. 3, 2026

Surrey's captain played Woakes to mid on, embarked upon an impossible single and failed to regain his ground after wicketkeeper Kai Smith made the most of an inaccurate throw from Ed Barnard.

From BBC • Apr. 3, 2026

Perched upon a wide oak table, among more strange items, Duane spied a snowy owl reading from a large open book.

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