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Synonyms

presumably

American  
[pri-zoo-muh-blee] / prɪˈzu mə bli /

adverb

  1. by assuming reasonably; probably.

    Since he is a consistent winner, he is presumably a superior player.

    Synonyms:
    apparently, likely, doubtless

presumably British  
/ prɪˈzjuːməblɪ /

adverb

  1. (sentence modifier) one presumes or supposes that

    presumably he won't see you, if you're leaving tomorrow

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of presumably

First recorded in 1640–50; presumable + -ly

Explanation

Presumably you are reading these word blurbs because you're interested in learning some useful words. You can add presumably to any statement that you think is true — it indicates a logical conclusion for which you don't have definite proof. When you add presumably to whatever you're saying, you're giving notice that you think what you're saying is true but telling your listener not to ask for the evidence. You might watch beer commercials and say to yourself, "Presumably advertisers think people will find this commercial amusing and want to run out and buy tubs of this beer." The adverb presumably is related to the nouns presumption and assumption, which are also notions you accept without proof.

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Vocabulary lists containing presumably

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.

See Examples For:

You said you were looking forward to spending more alone time with her, presumably to forge a deeper bond.

From MarketWatch Sep. 2, 2026

According to the logline, this discovery kicks off an “adventure of a lifetime” — and I’m curious what that might mean for people whose careers presumably involve carefully sifting through old dirt all day.

From Los Angeles Times Sep. 1, 2026

Something more is required than “the psychological consequence presumably produced by observation of conduct with which one disagrees.”

From The Wall Street Journal Sep. 1, 2026

It was "presumably filled with technical surveillance equipment", he said, and used by "people who are not well-disposed toward Germany".

From Barron's Sep. 1, 2026

How on earth could prehistoric people of Borneo, presumably voyaging in boats without maps or compasses, end up in Madagascar?

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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