Tra từ assert - Từ điển Oxford Advanced Learner 8th

as·sert [assert asserts asserted asserting] BrE [əˈsɜːt] NAmE [əˈsɜːrt] verb
1. to state clearly and firmly that sth is true
•~ that… She continued to assert that she was innocent.
•~ sth She continued to assert her innocence.
•The German Chancellor was anxious to assert his government's commitment to further European unity.
•+ speech ‘That is wrong,’ he asserted.
•it is asserted that… It is commonly asserted that older people prefer to receive care from family members.
2. ~ yourself to behave in a confident and determined way so that other people pay attention to your opinions
•You're too timid— you must try to assert yourself more.
3. ~ sth to make other people recognize your right or authority to do sth, by behaving firmly and confidently
•to assert your independence/rights
•I was determined to assert my authority from the beginning.
4. ~ itself to start to have an effect
•Good sense asserted itself.
Verb forms:

Word Origin:
early 17th cent.: from Latin asserere ‘claim, affirm’, from ad- ‘to’ + serere ‘to join’.

Example Bank:
•He managed to assert his power over the media.
•She wished to assert her independence from her parents.
•The report asserts confidently that the industry will grow.
•They successfully asserted their right to protect their homes.