Farsi Relative Clauses: How “Ke” Builds Complex Sentences

One Word Does the Job of Five

English uses who, which, that, where, and when to build relative clauses. Farsi uses one word: ke (که). That’s it. “The man who came,” “the book which I read,” “the place where I was born,” “the day when we met”. all of them use ke in Farsi. Farsi relative clauses are structurally simpler than English ones. The hard part isn’t the grammar. it’s getting used to how much work this tiny word does.

This post is part of the Persian Grammar series.

If you already know the basics of Farsi sentence structure (SOV word order) and conjunctions, relative clauses are the natural next step. They’re what separate “I saw a man. The man was tall.” from “I saw a man who was tall.” One structure sounds like a beginner. The other sounds like an actual speaker.

The Basic Pattern: Noun + Ke + Clause

The clause after ke describes or identifies the noun before it. The word order inside the ke-clause follows normal Farsi SOV rules:

mardi ke diruz umad (مردی که دیروز اومد). the man who came yesterday
ketâbi ke khundam (کتابی که خوندم). the book that I read
jâyi ke be donya umadam (جایی که به دنیا اومدم). the place where I was born
ruzi ke âshnâ shodim (روزی که آشنا شدیم). the day (when) we met
dukhtari ke bâhâsh harf mizadam (دختری که باهاش حرف میزدم). the girl (who) I was talking to

Notice the last example: “the girl who I was talking with her.” Persian keeps a pronoun reference (-esh = her) inside the clause even though English drops it. This is called a resumptive pronoun. Persian loves them, English hates them.

The Resumptive Pronoun: Persian’s Extra Reference

In English: “the book that I bought”. no pronoun needed after “that.”
In Persian: “ketâbi ke kharidamesh“. the pronoun -esh (it) stays attached to the verb.

This happens whenever the noun that ke refers to would normally be an object or prepositional complement inside the clause:

pesari ke bâhâsh harf zadam (پسری که باهاش حرف زدم). the boy I talked with (lit: with-him)
ghazâyi ke dorost kardamesh (غذایی که درست کردمش). the food I made (lit: made-it)
kasi ke behesh goftam (کسی که بهش گفتم). the person I told (lit: to-him/her)

In fast spoken Farsi, the resumptive pronoun sometimes drops. “ketâbi ke kharidam” instead of “kharidamesh.” Both work. But keeping the pronoun is more natural in most contexts and sounds more fluent, not less.

Ke for “Because” and “That”

Ke isn’t only a relative pronoun. It doubles as:

“Because” / “Since”

nayumad, ke mariz bud (نیومد، که مریض بود). he didn’t come, because he was sick
zud raft, ke kâr dâsht (زود رفت، که کار داشت). he left early, since he had work

When ke means “because,” it usually comes after a comma or a pause. This is different from the relative use where ke comes right after the noun.

“That” (complement clause)

midoonam ke miri (میدونم که میری). I know that you’re going
goft ke nemiâd (گفت که نمیاد). he said that he’s not coming
fekr mikonam ke dorost-e (فکر میکنم که درسته). I think that it’s correct

In spoken Farsi, this “that” ke often drops entirely: “midoonam miri,” “goft nemiâd,” “fekr mikonam dorost-e.” It’s optional but adds clarity in longer sentences.

Ke for Purpose: “So That”

When ke introduces a purpose, the verb after it takes the subjunctive:

umad ke bebinamet (اومد که ببینمت). he came so that he’d see you
zang zadam ke begam (زنگ زدم که بگم). I called to say (so that I’d say)
dâram dars mikhoonam ke ghâbol besham (دارم درس میخونم که قبول بشم). I’m studying so that I pass

The test: if you can replace “ke” with “so that” and the sentence still works, you need subjunctive after it.

Spoken Ke: Shortcuts and Compressions

In fast speech, ke often fuses with the word before it. “Mardi ke” becomes “mardike” (مردیکه). “Chizi ke” becomes “chizike” (چیزیکه). “Jâyi ke” becomes “jâyike” (جاییکه). This is just speed. the grammar is identical.

Also notice: spoken Farsi drops “ast” (is) from the end and switches “râ” to “ro”. standard spoken vs written compressions.

Building Multi-Ke Sentences

Complex Persian sentences can stack multiple ke-clauses. This is where intermediate learners either level up or get lost:

pesari ke bâhâsh harf zadam goft ke nemiâd
(پسری که باهاش حرف زدم گفت که نمیاد)
. The boy I talked to said that he’s not coming

Two ke’s, two different functions: the first is relative (“the boy who…”), the second is complement (“said that…”). Persian handles this without confusion because the first ke modifies “pesari” and the second follows “goft.”

A triple-ke sentence:

zanike diruz umad goft ke pesaresh ke dâneshju-ye goft ke nemitoone biyâd
(زنیکه دیروز اومد گفت که پسرش که دانشجویه گفت که نمیتونه بیاد)
. The woman who came yesterday said that her son who’s a student said that he can’t come

Is it elegant? No. Do Iranians construct sentences like this in real conversation? Absolutely. The key is that each ke has a clear anchor. it modifies or follows a specific word.

Ke vs Relative Pronouns in English

Quick reference for English speakers trying to map ke onto English:

English “who” → ke (for people): mardi ke = the man who
English “which/that” → ke (for things): chizi ke = the thing that
English “where” → ke (for places): jâyi ke = the place where
English “when” → ke (for times): vaghti ke = the time when
English “whose” → ke + possessive pronoun: mardi ke mâshinesh = the man whose car

That last one. “whose”. is where Persian adds a possessive clitic: “mardi ke mâshinesh gerune” (the man whose car is expensive). The -esh on mâshin links back to the man.

For the full grammar roadmap, head to the Persian Grammar Guide.

Frequently Asked Questions

Relative clauses are what turn your Farsi from choppy short sentences into flowing, connected speech. If you want to practice building ke-clauses in real time until they feel natural. book a session with me on Preply and we’ll work through storytelling drills that force multi-ke structures.