According to the Talmud,1 the Hebrew word "amen" (pronounced "ah-men" or, in Ashkenazi pronunciation, "uh-main") is related to the word "amanah," meaning truthfulness, credence or belief. When we hear another reciting a blessing we respond with "amen"; thus affirming that we believe that which has just been said.

In addition, amen (אמן) is an acronym for the Hebrew words א-ל מלך נאמן, (El Melech Ne'eman), meaning "G‑d, the trustworthy King."

Shabbat Shalom,

Rabbi Eliezer Posner