Entering the Jewish synagogue, one word in particular might seem familiar: Amen. In the Hebrew world of the shul, it can be really exciting to hear a word you already know! You might already know Shabbat, shalom, and a few other words, but Amen is downright familiar to the average American.
But don’t go around saying “A-men” because that’ll peg you as a n00b immediately. Judaism has a different pronunciation of Amen than you are probably used to.
Say it with me: “Ah-main” (spelled for the average American English speaker). You may see it written in transliteration as Amein, but don’t confuse that with the German pronunciation of “mein.” And don't be misled by the "How to Pronounce Amen" video on YouTube. Often, I find their videos useful in Jewish contexts, but not for this word.
This one easy tweak to your vocabulary can make you fit in a lot faster! And you won’t feel like an idiot by learning it the hard way. Of course, most people wouldn't be as hard on you as you will be on yourself. Small changes, big embarrassment feelings avoided.