assume

verb

as·​sume ə-ˈsüm How to pronounce assume (audio)
assumed; assuming

transitive verb

1
a
: to take to or upon oneself : undertake
assume responsibility
b
: to place oneself in
assume a position
2
: seize, usurp
assume control
3
: to pretend to have or be : feign
assumed an air of confidence in spite of her nervousness
4
: to take as granted or true : suppose
I assume he'll be there.
5
: to take over (the debts of another) as one's own
6
: put on, don
Mrs. Fairfax assumed her best black satin gown, her gloves, and her gold watch.Charlotte Brontë
7
a
: to take up or in : receive
b
: to take into partnership, employment, or use
assumability noun
assumable adjective
assumably adverb

Did you know?

The Difference Between Assume and Presume

Assume and presume both mean "to take something for granted" or "to take something as true," but the words differ in the degree of confidence the person assuming or presuming has. Presume is used when someone is making an informed guess based on reasonable evidence. Assume is used when the guess is based on little or no evidence.

Presume functions a little differently in the legal catchphrase "presumed innocent until proven guilty." That sense of presume is separately defined as "to suppose to be true without proof." It is based on the fact that legal systems grant a defendant the presumption of innocence, thereby placing the burden of proof on the prosecution.

Choose the Right Synonym for assume

assume, affect, pretend, simulate, feign, counterfeit, sham mean to put on a false or deceptive appearance.

assume often implies a justifiable motive rather than an intent to deceive.

assumed an air of cheerfulness around the patients

affect implies making a false show of possessing, using, or feeling.

affected an interest in art

pretend implies an overt and sustained false appearance.

pretended that nothing had happened

simulate suggests a close imitation of the appearance of something.

cosmetics that simulate a suntan

feign implies more artful invention than pretend, less specific mimicry than simulate.

feigned sickness

counterfeit implies achieving the highest degree of verisimilitude of any of these words.

an actor counterfeiting drunkenness

sham implies an obvious falseness that fools only the gullible.

shammed a most unconvincing limp

Examples of assume in a Sentence

I assumed he was coming, so I was surprised when he didn't show up. She assumed from his expression that he was confused. We'll be arriving around noon. That's assuming that our flight is on time. The king assumed the throne when he was very young. Under certain conditions, the chemical will assume the appearance of ice.
Recent Examples on the Web Vivendi’s gaming firm Gameloft posted quarterly revenue of €68 million, down 3.4 percent compared to the first quarter of 2023, or down 2.9 percent assuming constant currencies and assets. Georg Szalai, The Hollywood Reporter, 29 Apr. 2024 According to his model — and, crucially, assuming the rate of inflation drops immediately to the Fed’s forecast of 2.5 percent annually — there would be an eight percentage point increase in consumer sentiment by November. Jeff Sommer, New York Times, 26 Apr. 2024 The coach also said the more diminutive wideout — Worthy measured 5 foot 11 and 165 pounds at the NFL Combine — had more strength than might be assumed. Jesse Newell, Kansas City Star, 26 Apr. 2024 The character has often been one he’s assumed to deliver his more aggressive and violent lyrics, which branded him as a controversial rapper from the start of his career. Steven J. Horowitz, Variety, 26 Apr. 2024 Cal State San Marcos (25-15, 24-11 CCAA) swept its four-game series last week against San Francisco State to assume first place in the California Collegiate Athletic Conference. Kirk Kenney, San Diego Union-Tribune, 26 Apr. 2024 And, assuming there was no immunity, could a past commander in chief have been prosecuted, like Franklin D. Roosevelt for certain controversial actions taken during World War II? Devin Dwyer, ABC News, 25 Apr. 2024 Many assumed that this decision had been Navalny’s wish. Simon Shuster / Vilnius, TIME, 17 Apr. 2024 Miss Manners assumes a willing compliance — and that dirty laundry that is suspiciously heavy can be assumed not to be ready for the current load. Jacobina Martin, Washington Post, 17 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'assume.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Middle English, from Latin assumere, from ad- + sumere to take — more at consume

First Known Use

15th century, in the meaning defined at sense 7a

Time Traveler
The first known use of assume was in the 15th century

Dictionary Entries Near assume

Cite this Entry

“Assume.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/assume. Accessed 3 May. 2024.

Kids Definition

assume

verb
as·​sume ə-ˈsüm How to pronounce assume (audio)
assumed; assuming
1
: to take upon oneself
assume control
assumed the presidency
2
: take on sense 3, receive
it assumes greater importance now
3
: to pretend to have or be : put on
immediately assumed a look of innocence
4
: to take as true : suppose
I assumed he knew

Legal Definition

assume

transitive verb
as·​sume
assumed; assuming
1
: to voluntarily take upon oneself
assume a risk
2
: to take over (the debts or obligations of another) as one's own
assume a mortgage

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