Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “assume”

See all translations

assume

verb [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 guilty simply because they've decided to remain silent. We mustn't assume the suspects' guilt.
More examples

assume verb [T] (PRETEND TO HAVE)

to pretend to have a different name or be someone you are not, or to express a feeling falsely: Moving to a different town, he assumed a false name. During the investigation, two detectives assumed the identities of antiques dealers. 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 midnight tonight. The terrorists assumed control of the plane and forced it to land in the desert. The issue has assumed considerable political proportions (= has become a big political problem).
(Definition of assume from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of assume?
Add Cambridge dictionaries to your browser to your website

Definitions of “assume” in other dictionaries

Word of the Day

past participle

the form of a verb, usually made by adding -ed, used in some grammatical structures such as the passive and the present perfect

Word of the Day

Euphemisms (Words used to Avoid Offending People)

by Kate Woodford,
March 04, 2015
​​​ We recently looked at the language that we use to describe lies and lying. One area of lying that we considered was ‘being slightly dishonest, or not speaking the complete truth’. One reason for not speaking the complete truth is to avoid saying something that might upset or offend people. Words and

Read More 

snapchat verb

March 02, 2015
to send someone a message using the photomessaging application Snapchat We used to have a thing until he got a girlfriend. now

Read More