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

pup

a baby of particular animals, or a puppy

Word of the Day

I won’t tolerate it! Replacing formal words with phrasal verbs.

by Liz Walter,
April 01, 2015
When you are using a language, it is important to understand if a word is formal or informal, so that you can use it in an appropriate way. You might hear people saying dosh for money, or spud for potato, but they wouldn’t write those words in a formal essay. Similarly, a

Read More 

stackin’ p

March 30, 2015
idiom slang earning a lot of money ‘That’s a very generous present.”Yeah, well, she’s stackin’ p, innit?’

Read More