assume Meaning in the Cambridge English Dictionary
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Meaning of “assume” in the English Dictionary

"assume" in British English

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assumeverb [T]

uk   /əˈsjuːm/  us   /-ˈsuːm/

assume verb [T] (ACCEPT)

B2 to ​accept something to be ​true without ​question or ​proof: [+ (that)] I assumed (that) you ​knew each other because you went to the same ​school. Let's assume (that) they're coming and make ​plans on that ​basis. [+ to infinitive] We can't assume the ​suspects to be ​guiltysimply because they've ​decided to ​remainsilent. We mustn't assume the ​suspects' ​guilt.
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assume verb [T] (PRETEND TO HAVE)

to ​pretend to have a different ​name or be someone you are not, or to ​express a ​feelingfalsely: Moving to a different ​town, he assumed a ​falsename. During the ​investigation, two ​detectives assumed the identities of ​antiquesdealers. He assumed a ​look of ​indifference but I ​knew how he ​felt.

assume verb [T] (TAKE CONTROL)

C2 to take or ​begin to have ​responsibility or ​control, sometimes without the ​right to do so, or to ​begin to have a ​characteristic: The new ​president assumes ​office at ​midnighttonight. The ​terrorists assumed ​control of the ​plane and ​forced it to ​land in the ​desert. The ​issue has assumed ​considerablepoliticalproportions (= has ​become a ​bigpoliticalproblem).
(Definition of assume from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"assume" in American English

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assumeverb [T]

 us   /əˈsum/

assume verb [T] (ACCEPT)

to ​accept something as ​true without ​question or ​proof: [+ (that) clause] We can’t assume (that) he’s ​innocentsimply because he says he is. [+ (that) clause] I assumed (that) nobody was ​home because the ​car wasn’t in the ​driveway.

assume verb [T] (PRETEND)

to ​pretend to be someone you are not, or to ​express a ​feelingfalsely: During the ​investigation, two ​detectives assumed the ​identities of ​antique dealers. Jim assumed a ​look of ​indifference.

assume verb [T] (TAKE CONTROL)

to take ​control or ​claimauthority, sometimes without the ​right to do so: The new ​president assumes ​office in ​January. If you assume ​responsibility for something, you ​becomeresponsible for it.
(Definition of assume from the Cambridge Academic Content Dictionary © Cambridge University Press)

"assume" in Business English

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assumeverb [T]

uk   us   /əˈsjuːm/
to begin to take ​control of something: assume control/office/a role Europe has assumed a ​leadership role in the prevention of future ​globalcrises.assume responsibility for sth The FSA said ​mortgages would not be affected when it assumed ​responsibility for the ​regulation of ​mortgagesales.assume a debt/mortgage/risk In ​addition to ​paying $3 ​billion in ​cash, the ​newspapergroup will assume $600 million of the company’s ​debt.
to ​accept that something is ​true without being sure about it: We are assuming a 6% ​growth in ​sales.assume that We can safely assume that we are ​ahead of the ​competition with this ​product. Assuming that all goes well, how ​long is the ​project expected to take?
to be ​based on a particular ​idea: These ​figures assume that ​inflation will ​rise no ​higher than 2%.
(Definition of assume from the Cambridge Business English Dictionary © Cambridge University Press)
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