Die or Dat? Dutch Relative Clauses Explained

You already know that de and het decide a lot in Dutch. They decide which word for "the" you use. They decide deze or dit, die or dat, when you're pointing at something. And now they show up again, in a totally different job: describing a noun with a clause, like English "the man who lives there" or "the book that I'm reading."

In Dutch, that "who" or "that" is also die or dat. Which one you pick still comes down to de/het. But this use of die/dat works differently from the ones you've already learned, and mixing them up is one of the most common small errors English speakers make once they get past the basics.

This article covers that specific job: die and dat as relative pronouns. It also draws a clear line between this use and two other uses of the exact same words, since that's usually where the confusion starts.

Dutch relative clauses: de → die, het → dat

A relative clause is a clause that describes a noun. It answers the question "which one?" without starting a new sentence.

De man die daar loopt, werkt bij de gemeente.

The man who's walking there works for the city.

Man is a de-word, so the relative pronoun is die. The clause die daar loopt ("who's walking there") describes de man, and it sits right after the noun it's describing.

Het boek dat ik koop, is duur.

The book that I'm buying is expensive.

Boek is a het-word, so the relative pronoun is dat. Same pattern: the clause dat ik koop attaches directly to het boek.

The short version: if the noun takes de, use die. If it takes het, use dat. That's genuinely most of the rule. If you know the gender of the noun, you know the pronoun.

One more piece: notice that the verb in the relative clause goes to the end. Die daar loopt, not die loopt daar. Dat ik koop, not dat koop ik. This is the same verb-final pattern you get in any Dutch subclause, so if you've already run into that with words like omdat or als, this will feel familiar.

There's also a plural rule worth knowing early, because it causes mistakes even after people feel comfortable with the singular version.

Worth knowing: for plural nouns, it's always die, no matter what the singular gender was. Het boek dat becomes de boeken die in the plural. De man die becomes de mannen die. Plural nouns all take de in front of them anyway. So this keeps the same de-to-die logic. It just means every plural relative clause uses die, even the ones built from a het-word.

Here's that same het-word turning into a plural, side by side:

Dier is a het-word on its own, so the singular clause uses dat. But dieren is plural, and every plural noun uses die in front of it and die as its relative pronoun. The het-ness of the singular word doesn't carry over at all once you pluralize.

Working through more examples

Let's build up from simple to a little more complex, so you can see the pattern hold.

De trein die om acht uur vertrekt, is altijd vol.

The train that leaves at eight o'clock is always full.

Trein is de, so die. Straightforward.

Het huis dat op de hoek staat, is te koop.

The house that's on the corner is for sale.

Huis is het, so dat. Also straightforward, just the other gender.

Now a plural, to show the rule doesn't care about the original gender anymore:

De kinderen die buiten spelen, zijn mijn buren.

The children who are playing outside are my neighbors.

Kind is a het-word in the singular (het kind). But kinderen is plural, and plurals always take die. If you translated word by word from "the kids that," you'd get no help from English here. English uses "that" or "who" for everything, no matter what the noun's gender is. You have to know the Dutch noun's gender, and then apply the plural override on top of it.

One more, with a longer clause, to show the verb-final rule holding even when the clause gets more complicated:

De vrouw die gisteren bij ons langskwam, is mijn tante.

The woman who came by our place yesterday is my aunt.

The relative clause is die gisteren bij ons langskwam. Even with three extra words in the middle, the verb langskwam still lands at the very end. That's the pattern to trust: whatever goes in the clause, the finite verb goes last.

Where English speakers go wrong

The single biggest mistake is picking die or dat based on how the sentence "feels" in English, instead of checking the noun's actual gender.

English doesn't split "who," "which," and "that" by gender at all, so there's no instinct to fall back on. A lot of English speakers end up guessing. Some default to whichever word they saw most recently. Others pick dat because it sounds close to English "that." None of that works reliably in Dutch. The only thing that decides it is the gender of the noun the clause is describing.

Common mistake: using dat just because the English translation happens to use the word "that." Het boek dat does use dat, but only because boek is a het-word, not because the English sentence used "that." Swap in a de-word and you'd need die even though the English sentence still says "that": De auto die ik koop ("the car that I'm buying").

The fix is the same fix you already use for de/het itself: when you learn a new noun, learn its gender with it. If you know de auto and het huis by heart, the relative pronoun follows automatically.

Three different jobs, same word

Here's where a lot of the confusion actually comes from. Dutch has three separate uses of die and dat, and they're spelled identically, so from the outside they look like one confusing rule instead of three simple ones.

1. Demonstrative use. This is die or dat used to point at something, standing on its own: Dat is mijn boek ("That is my book"). There's a separate piece on deze, dit, die, dat that covers this use in more depth. It doesn't attach to a following clause.

2. Relative use. This is the topic of this piece. It always attaches to a noun that comes right before it, and introduces a clause describing that noun. It never stands alone. Het boek dat ik koop only works because dat directly connects to het boek and is followed by a description of it.

3. Conjunction dat. This is "that," introducing reported speech or a statement. It's a completely different word that happens to be spelled the same way. It doesn't refer back to any specific noun's gender. It just links a whole clause to a verb like zeggen ("to say") or denken ("to think").

Hij zegt dat hij morgen komt.

He says that he's coming tomorrow.

Compare that to the relative use. Het boek dat ik koop refers back to het boek, a specific het-word. But Hij zegt dat... doesn't refer back to any noun at all. There's no het-word sitting in front of it that dat is describing. It's just the connector word for "he says [this whole thing]."

Both the relative dat and the conjunction dat send the verb to the end of their clause, which is exactly why they get confused. But only one of them is picking a word based on a noun's gender. The conjunction dat never changes to die, no matter what. There's no such thing as a de-word version of "he says that..."

Heads up: if you're ever unsure which of the three you're looking at, ask yourself: is this word standing alone (demonstrative)? Is it sitting right after a specific noun and describing it (relative)? Or is it introducing a whole statement with no noun to agree with (conjunction)? That question sorts it out every time.

A few edge cases

There's one edge case worth knowing about now, so you know what you're looking at later: what happens when the relative pronoun needs a preposition, like "the woman I'm talking with" or "the chair I'm sitting on."

Dutch doesn't just put a preposition in front of die or dat for things. Instead it uses waar fused with the preposition into one word, like waarmee or waarop, for things and places, and preposition plus wie for people.

De stoel waarop ik zit, is kapot.

The chair I'm sitting on is broken.

That's its own topic, mostly at a slightly higher level, and it deserves its own explanation rather than a rushed mention here. For now, just know these waar-plus-preposition words exist. You'll run into waarmee or waarin soon enough.

Putting it together

1. Relative clauses describe a noun, and the relative pronoun goes right after that noun.
2. De-words take die, het-words take dat, in the singular.
3. Plural nouns always take die, regardless of the noun's original singular gender.
4. The verb in the relative clause goes to the end, same as any Dutch subclause.
5. Relative die/dat is different from demonstrative die/dat (which stands alone, pointing at something) and different from conjunction dat (which introduces reported speech and never depends on gender).

Go practice this

Pick five nouns you already know the gender of, three de-words and two het-words. For each one, write a one-sentence relative clause describing it, out loud if you can. Saying de man die... and het boek dat... enough times in a row helps you respond without stopping to think about it mid-sentence.

Next time you're reading something in Dutch, a news article or even a product description, underline every die and dat you find and label each one: demonstrative, relative, or conjunction. It's a quick way to see how often all three actually show up next to each other in real text.

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