assert
US /əˈsɝːt/
UK /əˈsɝːt/

1.
afirmar, aseverar, declarar
state a fact or belief confidently and forcefully
:
•
He continued to assert his innocence.
Él continuó afirmando su inocencia.
•
The company asserted that the new product would revolutionize the market.
La empresa afirmó que el nuevo producto revolucionaría el mercado.
2.
afirmarse, hacer valer
behave or speak in a way that expresses your confidence, importance, or power and earns you respect from others
:
•
You need to assert yourself more in meetings.
Necesitas afirmarte más en las reuniones.
•
It's important to assert your rights.
Es importante hacer valer tus derechos.