If you walk into a cafe in Northern Tehran speaking the “Standard Persian” you learned from formal textbooks, you are going to get roasted. You will sound like a news anchor from the 1980s, or worse, a fed.
I live in Italy, and I see the exact same problem here. You learn “Buon giorno, come sta?” in your classes, but then you step onto the streets of Milan and realize the guys at the bar are speaking a totally different language.
Persian is the same deal. The grammar books teach you the “polite” version. the kind of Farsi that makes you sound like a 19th-century poet. The gap between textbook and street Farsi is real. but the real culture lives in the gutters. As a PolSci student, I am obsessed with how people actually talk, not how the Academy wants them to talk.
Here is the raw data on the 10 Farsi slang words you actually need to survive Tehran.
1. Khafan (خفن)
The Vibe: Sick / Awesome / GOAT
Start with this one. It is the single most important slang word in the Persian language right now. Literally, it means “asphyxiating” or “choking.” Do not ask why. In practice, it means something is so cool it is dangerous.
My Italian friends say Che figo, and Americans say Dope, but neither captures the intensity of Khafan. When an Iranian says something is khafan, they mean it hit them in the chest.
- Example: In ahang kheyli khafane. (This song is sick.)
- Check out Radio Javan to hear this used in every other rap song.
2. Pichundan (پیچوندن)
The Vibe: Ghosting / Ditching / Twisting
This is the art of the “Ghost.” Literally “to twist,” but Iranians use it when someone ditches plans, dodges a difficult question, or flakes on a date. If you are dating an Iranian and they stop replying? You got Pichundan-ed. If a politician answers a question about the economy by talking about the weather? He Pichund.
In Italy I watch politicians do this on live TV every single day, so the word resonated with me immediately. The difference is that Iranians actually have a word for it, which makes calling it out much more satisfying.
- Example: Manam pichund. (He ghosted me too.)
3. Oskol (اسکل)
The Vibe: Idiot / Lovable Fool
There is a popular urban legend that an Oskol is a bird that gathers food for winter and then forgets where it buried it. Ornithologists say the bird does not exist, but trust me, the people definitely do. It is a soft insult. more affectionate than aggressive. Use it for your friend who pushes a “Pull” door. Or the guy who tries to order in Farsi at a restaurant and accidentally calls the waiter a potato.
- Example: Oskol bazi dar nayar. (Do not act like an Oskol.)
4. Kaf Kardam (کف کردم)
The Vibe: I am Shocked / “I Foamed”
Yes, like a rabid dog. It means you were so shocked by something that you started foaming at the mouth. In 2026, we mostly use this when we look at the inflation rate or the price of an espresso. Italians have the same reaction to espresso prices outside of Naples, but they just wave their hands. Iranians foam.
- Example: Gheymat-e iPhone ro didam, kaf kardam. (I saw the price of the iPhone, I foamed.)
5. Khaz (خز)
The Vibe: Cringe / Tacky / Cheesy
This is the “Cringe Police” word. Originally it meant “fake fur.” Now it describes anything tacky, cheap, or trying too hard. Gold rims on a cheap Peugeot 206? Khaz. Using pickup lines you found on Google Translate? Extremely Khaz. Saying mersi in every situation without knowing the actual rules of politeness in Farsi? Also kind of khaz.
- Example: In filme kheyli khaz bud. (That movie was so cringe.)
6. Sooti (سوتی)
The Vibe: A Blunder / Slip-up
Literally a “whistle.” This is a verbal slip-up or an embarrassing mistake that escapes your mouth before your brain can catch it. In Italy, if I accidentally call my professor “Bella” (Beautiful) instead of “Professoressa,” that is a massive Sooti.
Important grammar note: You do not just “make” a mistake in Persian. You “give” a Sooti. Sooti dadam. “I gave a blunder.” Persian assigns blame differently than English. If you want to understand more about how Persian structures the self differently, that is a whole other rabbit hole.
- Example: Ye sooti-e bozorg dadam. (I made a huge blunder.)
7. Lash (لش)
The Vibe: Lazy / Chilling / Rotting
This is a lifestyle. Literally “carcass” or “dead body.” It describes that state of being where you are melting into the couch, wearing sweatpants, refusing to be productive. It is not just lazy. it is a vibe. Italians call it Dolce far niente (the sweetness of doing nothing). Iranians call it being a carcass. If you have read my piece on why Iranians use death as a love language, you will notice a pattern: we are obsessed with corpse metaphors.
- Example: Emruz faghat lash kardam. (Today I just rotted.)
8. Jo-gir (جوگیر)
The Vibe: Hype-beast / Overexcited
“Atmosphere-taken.” You know that guy who watches one MMA fight and suddenly wants to fight everyone at the bar? He is Jo-gir. The friend who reads one article about crypto and puts his entire savings into a meme coin? Jo-gir. It is someone who gets swept up by the energy of a moment and acts completely out of character. Do not be Jo-gir.
- Example: Jo-gir nasho, besheen. (Do not get hyped, sit down.)
9. Dahan-servis (دهن سرویس)
The Vibe: “You son of a gun”
Literally “Mouth-serviced.” Look, Persian insults are anatomical and weird. If you want the full breakdown of how our swearing ecosystem works, check the definitions on Forvo or ask me in class. I have a whole lesson on it.
This one is surprisingly flexible. If someone pulls a prank on you, you laugh and say it. If someone passes a seemingly impossible exam, you say it with respect. Context is everything, and tone is the difference between a compliment and a fight.
- Example (impressed): Dahan-servis, chetor pass shodi? (You son of a gun, how did you pass?)
10. Faze (فاز)
The Vibe: Mood / Energy / Phase
We stole “Phase” from English/French, but we completely hijacked its meaning. In Persian, Faze means “vibe” or “mood,” and it shows up everywhere in daily conversation.
- Faze-e manfi: Negative energy / buzzkill.
- Faze-e gham: Sad boy hours.
- Che fazie?: What is the deal? / What is the vibe?
This is one of those words that proves Farsi slang is alive and evolving. It borrows from the West, flips the meaning, and makes it its own. That is what street Farsi does. it moves fast, and textbooks cannot keep up.
Where to Go Next
Reading a list is the easy part. Actually using these Farsi slang words without sounding like a tourist. or an Oskol. is the hard part. Context, tone, and timing are everything. You cannot learn that from a vocabulary list.
To hear this slang in context, One Scene a Week, Episode 5 drops you into a Tehran bazaar negotiation where “dâdâsh” and “bâbâ” fly every other sentence. And Episode 22 captures four friends on a road trip using the fastest, most compressed Tehrani slang you’ll hear anywhere.
Ready for the next level after slang? The 50 Persian proverbs guide covers the one-liners Iranians have been deploying for centuries. proverbs are slang’s older, sharper sibling.
If this post got you curious, here are some rabbit holes worth falling into:
- Why You Sound Like a 19th-Century Poet (And How to Fix It). The gap between textbook Farsi and real Farsi, explained.
- The Vegetable Insult Guide. Why calling someone a potato in Farsi is an act of war.
- Necrophilia as a Love Language. Why Iranians want to die for their taxi drivers.
- How to Say No in Farsi. Spoiler: it is never a simple “no.”
- Stop Saying “I” in Farsi. Why you sound arrogant and how to fix it.
And if you want to actually practice using these words in real conversation. with corrections, context, and the kind of explanations you will never get from an app. book a trial lesson with me on Preply. I teach Persian the way we actually speak it in Tehran: slang, politics, and bad jokes included.
For more slang organized by context, generation, and region, see the full Persian Slang Guide. And if you want the words Iranians whisper (or shout in traffic), we have a whole guide to Persian curse words too.
