/ əˈsjuːm; NAmE əˈsuːm/ verb
1.
to think or accept that sth is true but without having proof of it :
[ v ( that )]
It is reasonable to assume (that) the economy will continue to improve.
Let us assume for a moment that the plan succeeds.
She would, he assumed, be home at the usual time.
[ vn that ]
It is generally assumed that stress is caused by too much work.
[ vn ]
Don't always assume the worst (= that sth bad has happened) .
In this example we have assumed a unit price of $10.
[ vn to inf ]
I had assumed him to be a Belgian.
2.
[ vn ] ( formal ) to take or begin to have power or responsibility
SYN take :
The court assumed responsibility for the girl's welfare.
Rebel forces have assumed control of the capital.
3.
[ vn ] ( formal ) to begin to have a particular quality or appearance
SYN take on :
This matter has assumed considerable importance.
In the story the god assumes the form of an eagle.
4.
[ vn ] ( formal ) to pretend to have a particular feeling or quality
SYN put on :
He assumed an air of concern.
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WORD ORIGIN
late Middle English : from Latin assumere , from ad- towards + sumere take.