Thesaurus.com
Dictionary.com
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.

Both countries have exchanged strikes for a second consecutive day, putting more strain on a fragile ceasefire arrived upon in April.

From BBC • Jun. 11, 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

As Ms. Carr shows, the parental perspective of what is happening may not impinge upon what siblings think is happening.

From The Wall Street Journal • Jun. 9, 2026

“It won’t be easy at all,” South Africa coach Hugo Broos said last December upon learning his team would debut against one of the hosts.

From Los Angeles Times • Jun. 9, 2026

He set upon a course of improving Maggie’s manners and morals to fit her for “a high position in society.”

From "American Spirits" by Barb Rosenstock




Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "upon" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com