Yes, I think so.
Origin of NOSH Yiddish nashn, from Middle High German naschen to eat on the sly First Known Use: 1931
Normally the name is spelled Sonnenschein. Linguistically, it is German (and also Yiddish).
Thought to be of German origin as 'pfui'. May also have a Yiddish connection as an expression of comtempt
The Yiddish word for 'sister' is exactly the same as in German: pronounced "SHVESS-tair".
Do that in German, and you'll be clearly understood by any Yiddish speaker.
Example: Why does Yiddish sound like German?
Yiddish was first spoken historically by Ashkenazic (European) Jews, beginning in what are now Germany and France, and resulting from a fusion of elements derived principally from medieval German dialects and secondly from Hebrew.
The Yiddish term for the color 'black' is "SHVARTZ", exactly as in German.
"SHVES-tair" ... straight from German.
"ZEES" ... from the German 'süß'
"MOYL" ... from the German "maul".
No, it is German.