Yiddish is spelled as Y-I-D-D-I-S-H.
There is no equivalent Yiddish name for Robert. But you can spell Robert in Yiddish as ראָבערט
Jenna in Yiddish = ×“×©×¢× ×¢ For comparison, Jenna in Hebrew = ×’×³× ×”
In Yiddish, the word for cat is "קאַץ" which is transliterated as "kats".
יארצייט.
In Yiddish, the word "eight" is spelled as "אַכט" (pronounced as "akh't").
Khazn
Aidele = איידעלע
Kibitz = קיבעץ
시에라 = Sierra
The same way as in Hebrew.
The name Teresa has no Yiddish translation, but you can spell it out as טערעסע