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

escapism

a way of avoiding an unpleasant or boring life, especially by thinking, reading, etc. about more exciting but impossible activities

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More