reassertverb [ T ]
/ˌriː.əˈsɜːt//ˌriː.əˈsɝːt/to do something to show that you still have power:
The country's warlords reasserted their control.
It is time for Congress to reassert its authority on the issue.
to say again that something is definitely true:
He reasserted his claim that he was the candidate who would bring change.
The president has reasserted that his testimony was neither false nor misleading.
reassert itself
to start to have an effect again:
Religion is reasserting itself in the public and political domain.