This is the 3113th most frequent German word.
constantin
"Constantin" is a proper noun in German, typically used as a male given name.
In this sentence, "Constantin" is used as a proper noun to refer to the name of a person.
Constantin ist ein talentierter Musiker.
Constantin is a talented musician.
Here, the word "constantin" is used metaphorically as an adverb-like word, perhaps in creative language use or poetic license, to suggest constancy.
Der Erfolg in meiner Karriere bleibt constantin.
The success in my career remains constant.
In this context, the word "konstanten" (similar in spelling to "constantin") is utilized as an adjective to describe an approach that remains stable and uniform.