"Good boy" in Yiddish can be translated as "guter yingel."
Mensch
In Yiddish, you can say "tsayt a gezunt" to say goodbye, which means "stay healthy".
In Yiddish, "good morning" is "gut morgn" (גוט־מאָרגן).
You are a good friend = Du bist a gute Fraind
"Jewish" in Yiddish is "ייִדיש" (yidish), pronounced as "yiddish."
In Yiddish, you can say "kesheprsia" to mean my pleasure.
In Yiddish, you can say "eynzik" to mean okay.
In Yiddish, you would say "zay dankbar."
To say "nephew" in Yiddish, you would say "neve."
In Yiddish, husband is "man."
To say "Catholic nun" in Yiddish, you would say "katolisher nonne."