Definition of “upon” - English Dictionary


“upon” in English

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uk /əˈpɒn/ us /əˈpɑːn/

B2 formal on:

Upon her head she wore a black velvet hat.
You can never place enough emphasis upon the importance of safety.
Upon your arrival (= as soon as you arrive), please report to the reception desk.
be upon sb formal

to be something that someone will experience or have to deal with soon:

Another few weeks and spring will be upon us.

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Thesaurus: synonyms and related words

On or off

You can also find related words, phrases, and synonyms in the topics:

(Definition of “upon” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“upon” in American English

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us /əˈpɑn, əˈpɔn/


That depends upon the circumstances.
She insisted upon knowing the truth.

Upon can be used to show that something happens soon after, and often because of, something else:

Upon hearing the good news, we all congratulated Murphy.

(Definition of “upon” from the Cambridge Academic Content Dictionary © Cambridge University Press)