These are some of the key terms I have found in "Na Nach" lingo. Listed are the Hebrew terms written in english and their definitions. Click on the play button to hear how to say them. (all the recordings are done with an American accent.) : )
Hafatza- (literally “spreading) The spreading of the energy of “Na Nach” usually through music, dance, selling books, distributing peteks and stickers, going door to door or even just praying about it. Everyone has their own unique way of doing Hafatza.
Meforsam-(literally “famous”) A derogatory term that refers to someone as a false rabbi. Short for “Meforsam shel shecker” (literally “one who spreads falsehood”) This term is practically interchangeable with the name of almost anyone called rabbi of our current time.
Pitkah-the letter miraculously written by Rebbe Nachman. And miraculously sent to Saba
Saba-(literally “grandfather”) this is the nickname that Rabbi Israel Odesser liked to be called by those that love him.
Simcha-true happiness.
Tzadik Ha-Emes (or Ha-Emet) the truly righteous soul, unique in his generation, majority of times this term is in reference to Rebbe Nachman himself.
tzadik-any righteous person, saint.
Kamea- (Literally “amulet”) The name “Na Nach Nachma Nachma Nachman MeUman” written on Parchment and placed in a small pouch with a photo copy of a Petek. Usually hung around the neck like a necklace.
Na Nach- a noun, the name of Rebbe Nachman as signed in the Petek. (see below). Also can be verb. To Na Nach. Saying "Na Nach" or engaging in any Na Nach type of behaviour can be called “nanaching” also and adjective to describe something as having a characteristic of "Na Nach".
Rosh Hashana- beginning of the Jewish year. The most important holiday of Na Nach. The major gathering of Na Nach's.
Kibbutz- any gathering of Na Nach's usually around the three major times of the year.
Breslover- a follower of Rebbe Nachman. Same as a Na Nach, though majority of Na Nach's do not consider majority of people who go by the name of “Breslover” as true Breslovers. Though Na Nach's still retain the name of “Breslover”
Shomer brit-(literally guarding of the covenant) key concept. Means keeping relations with the opposite gender within the bounds of Holiness. Equally important, guarding one's thoughts and keeping them happy and pure, in general, keeping oneself, mind body and soul within the bounds that are meant for that individual.
Emunah- faith in G-d, the Torah and the tzadik.
Sheker- falsehood. Anything that is opposite Na Nach.
Uman- City in the Ukraine, the burial site of Rebbe Nachman.
B-Yerushalayim- literally "In Jerusalem" a term expressing the belief that the rosh Hashana gathering is now in Jerusalem and one need not go to Uman.
Na Nach Nachma Nachman MeUman- the name of Rebbe Nachman in the form that he signed it in the Petek. The song of redemption, the single, doubled, tripled and quadrupled song.
Saba Zeh Rabainu-literally "Saba is our Rabbi" this is taken to mean the belief that Rabbi Israel Ber Oddesser is Rebbe Nachman. I'm not really sure if that is what this always means, but anyway it's a cool thing to say.
Saba Zeh Moshiach- Saba is the Messiah
Uman Nigmar- "Uman is finished" statement made by Saba in Uman taken to mean that we no longer need to go to Uman
Tefillah- prayer, saying "Na Nach" is also a prayer.