This is the 9336th most frequent German word.
matus
The word "matus" does not exist in standard German; it may be a typo, slang, or a term from another context.
In this sentence, 'Matus' is used as a proper noun, representing the name of an individual.
Der Name des neuen Schülers ist Matus.
The name of the new student is Matus.
Here, 'Matus' is the subject of the sentence, once again used as a proper noun.
Matus versteht Deutsch sehr gut.
Matus understands German very well.
In this instance, 'Matus' is the direct object of the verb 'geholfen' (helped), and it remains a proper noun.