This is the 2908th most frequent German word.
überzeugte
"Überzeugte" means "convinced" or "persuaded" in English.
Here, 'überzeugte' is used as the simple past of the verb 'überzeugen', meaning to convince or persuade someone.
Er überzeugte seine Freunde, ihm zu helfen.
He convinced his friends to help him.
In this context, 'überzeugte' expresses the idea of impressing or gaining approval, using the simple past form of the verb.
Sie überzeugte mit ihrem Wiedervorschlag.
She impressed with her revised proposal.
Here, 'überzeugte' reflects the action of something (the vision) convincing someone, again in the simple past form.