chacham

wiseguy

wise, learned person; genius

rabbi (Sephardi)

chazak u'baruch

"be strong and be blessed," usually said to someone who participated in a religious service in some way (for example, has an aliyah, makes a donation, opens the ark, etc.)

chazak veematz

"Be very strong and courageous!"

Hashem imachem

"God be with you!" Sephardi greeting given by ice approaching the Torah-reading desk after being called up to the Torah.

Moadim lesimcha

Happy holiday! Greeting used on Pesach and Sukkot.

siman tov

A congratulatory term meaning "(may it be) a good omen!"