Yiddish, Yiddishkeit (c.G.),
Jewish, Judaism.
Yigdal (H.),
hymn summarizing the thirteen creeds drawn up by Maimonides.
Yom Kippur (H.),
Day of Atonement.
Yom tof (H.), lit.,
good day; Festival.
Yontovdik (hybrid H.),
pertaining to the Festival.
Yosher-Kowach (c.H.),
May your strength increase! = Thank you; a formula to express
gratitude—especially at the end of a reading.