Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “assert”

assert

verb [T]  /əˈsɜrt/ us  
to state an opinion or claim a right forcefully: [+ that clause] The companies have asserted that everything they did was appropriate. To assert is also to behave in a way that shows power, authority, or control: Several members of Congress called upon the president to assert leadership. If you assert yourself, you act forcefully in a way that expresses your confidence: You have to learn to speak up and assert yourself at meetings, or you’ll never get anywhere.
assertion
noun [C]  /əˈsɜr·ʃən/ us  
Critics say the company forces workers to drive recklessly, an assertion the company denies.
(Definition of assert from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of assert?
Add Cambridge dictionaries to your browser to your website

Definitions of “assert” in other dictionaries

Word of the Day

first:

(a person or thing) coming before all others in order, time, amount, quality, or importance

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More