Relative Clauses in Basque

In Brief

A Basque relative clause normally comes before the noun it describes, and its finite verb takes -(e)n: ikusi dudan gizona, “the man I saw.” Basque does not insert a relative pronoun equivalent to English “who,” “which,” or “that.” The noun after the clause carries the article and any ending required by the larger sentence.

Overview

A relative clause is a small clause that identifies or describes a noun (a word for a person, place, thing, or idea). English uses forms such as “who,” “that,” “which,” and “where”: “the neighbour who lives here” or “the film that we watched.” Basque packages the information in the opposite order: hemen bizi den bizilaguna and ikusi dugun filma. The description comes first; the noun arrives last.

This B1 pattern is central to natural Basque. It lets you combine short statements, specify exactly which person or thing you mean, and add background information without repeatedly starting a new sentence. It also fits a wider Basque habit: material that modifies a noun usually stands before that noun.

English-speaking learners have two habits to resist. First, do not put the noun at the start and then search for a Basque word meaning “who” or “that.” Second, do not look only at the last letter of the verb: Basque auxiliaries already show who is involved in an action, so the correct relative form depends on the entire verb pattern.

How It Works

The core pattern

The basic order is:

[relative clause + finite verb in -(e)n] + [head noun]

The head noun is simply the person or thing being described. Compare two independent statements with their combined version:

• Gizon bat ikusi dut. Gizona Gasteizen bizi da. — “I saw a man. The man lives in Vitoria-Gasteiz.”
• Ikusi dudan gizona Gasteizen bizi da. — “The man I saw lives in Vitoria-Gasteiz.”

Inside the relative clause, gizona would be the thing seen. It is not repeated there. It appears once, after the relative verb dudan.

Adding -(e)n to the finite verb

A finite verb is the part of the verb phrase that changes for tense and for the people or things involved. In common compound verbs, the main verb stays where it normally is and the auxiliary receives the relative ending.

Ordinary form	Relative form	Example phrase	Meaning
da	den	hemen dagoen giltza	the key that is here
dira	diren	etorri diren lagunak	the friends who have come
du	duen	autoa duen emakumea	the woman who has a car
dut	dudan	erosi dudan ogia	the bread I bought
naiz	naizen	bizi naizen herria	the town where I live
zarete	zareten	hemen zaudeten ikasleak	you students who are here

The spelling is not always a matter of attaching a visible n to the citation form. Standard forms such as da → den and du → duen include e. It is best to learn frequent relative forms as complete units.

Many past auxiliaries already end in -n. Their independent and relative forms can therefore look identical:

Independent clause	Relative phrase
Atzo gizona ikusi nuen. — I saw the man yesterday.	atzo ikusi nuen gizona — the man I saw yesterday
Etxea handia zen. — The house was large.	handia zen etxea — the house that was large
Han bizi ginen. — We lived there.	bizi ginen auzoa — the neighbourhood where we lived

Position and meaning show that the past form is relative; no extra -n is added.

Keep the auxiliary agreement

The relative ending does not erase ordinary verb agreement. Basque auxiliaries can reflect the subject and one or more objects, so changing the participants changes the form:

Basque phrase	Who does what?	English
ikusi dudan filma	I saw the film	the film I saw
ikusi duzun filma	you saw the film	the film you saw
ikusi duen filma	he/she saw the film	the film he/she saw
ikusi dugun filma	we saw the film	the film we saw

The missing item is the head noun filma, but the person doing the seeing is still encoded in dudan, duzun, duen, dugun.

The head noun takes the outer ending

The relative clause and its noun form one noun phrase. The noun then receives the article and the case ending (an ending showing the noun's role, such as subject, object, or location) required by the main clause.

Noun phrase in the larger sentence	Function	Meaning
etorri den mutila	subject in an intransitive clause	the boy who came
etorri den mutilak	agent of a transitive clause	the boy who came (does something)
etorri den mutilari	recipient	to the boy who came
etorri den mutilarekin	companion	with the boy who came

For example, Atzo etorri den mutilarekin hitz egin dut means “I spoke with the boy who came yesterday.” The ending -arekin belongs to mutila in the main sentence, not to etorri inside the relative clause.

Subject, object, and place meanings

The noun understood inside the relative clause may have different roles:

• etorri den emakumea — “the woman who came” (the woman is the subject of “came”)
• ezagutu dudan emakumea — “the woman I met” (the woman is the object of “met”)
• bizi naizen hiria — “the city where I live” (the city supplies a place relation)
• joaten naizen eskola — “the school I go to” (the school is the destination)

Basque does not need separate words for English “who,” “that,” and “where” in these ordinary patterns. The verb form and context allow the listener to recover the relationship. Place relations are especially common with nouns whose meaning makes the omitted relation obvious, such as etxea, herria, hiria, or eskola.

Negation and other clause material

Everything that belongs to the description stays before the head noun. Negative ez, time expressions, adverbs, objects, and complements keep their normal relationship to the verb:

• etorri ez den irakaslea — “the teacher who has not come”
• goizean prestatu dudan kafea — “the coffee I made in the morning”
• Mirenekin hitz egin duen gizona — “the man who spoke with Miren”

The relative marker belongs on the finite verb, which normally closes the relative clause immediately before the noun.

Examples in Context

Basque	English	Note
Hemen bizi den emakumea medikua da.	The woman who lives here is a doctor.	The described woman is the subject of bizi da.
Erosi dudan liburua oso interesgarria da.	The book I bought is very interesting.	dut → dudan; the book is the understood object.
Atzo ikusi nuen gizona.	The man I saw yesterday.	A noun phrase; past nuen already ends in -n.
Joaten naizen eskola urrun dago.	The school I go to is far away.	A destination meaning is understood.
Gurekin etorri diren lagunak donostiarrak dira.	The friends who came with us are from San Sebastián.	Plural dira → diren.
Zuk prestatu duzun afaria goxoa dago.	The dinner you prepared tastes good.	duzun marks “you” as the agent.
Ezagutzen ez dudan pertsona batek deitu dit.	A person I do not know called me.	Negation stays inside the relative clause.
Haurrak jolasten diren parkea itxita dago.	The park where the children play is closed.	The place relation is inferred from parkea.
Mahai gainean dagoen telefonoa nirea da.	The phone that is on the table is mine.	A state or location with dagoen.
Atzo iritsi zen trena berandu zetorren.	The train that arrived yesterday was running late.	Past zen has the same visible form.
Irakasleak gomendatu digun filma ikusiko dugu.	We will watch the film the teacher recommended to us.	The auxiliary preserves the people involved.
Bilbon bizi ginen garaia ondo gogoratzen dut.	I remember well the time when we lived in Bilbao.	garaia supplies a time relationship.

Common Mistakes

Copying English word order

• Wrong: gizona nik ikusi dudan
• Right: nik ikusi dudan gizona
• Why: In the standard basic pattern, the relative clause precedes its head noun. Do not begin with the noun as English does.

Adding a word for “who” or “that”

• Wrong: nor hemen bizi den emakumea
• Right: hemen bizi den emakumea
• Why: nor means “who?” in a question; it is not an all-purpose relative pronoun. The relative verb ending already marks the clause.

Leaving the verb independent

• Wrong: hemen bizi da emakumea when you mean “the woman who lives here”
• Right: hemen bizi den emakumea
• Why: da completes an independent statement. Before a head noun, use the relative form den.

Using the wrong auxiliary person

• Wrong: zuk erosi dudan liburua
• Right: zuk erosi duzun liburua
• Why: The agent is “you,” so the auxiliary must be duzun, not first-person dudan.

Attaching the main-sentence case to the wrong element

• Wrong: etorri denarekin mutila hitz egin dut
• Right: etorri den mutilarekin hitz egin dut
• Why: “With” applies to the whole phrase “the boy who came.” Its ending therefore goes on the head noun: mutilarekin.

Doubling the ending on a past form

• Wrong: ikusi nuenen filma
• Right: ikusi nuen filma
• Why: Past nuen already has the form needed here. Do not add another -en.

Usage Notes

Basque relative clauses often correspond to both defining and non-defining English relatives. A defining relative tells you which person or thing is meant (“the student who called”); a non-defining one adds extra information (“Ane, who called yesterday, ...”). The verb formation is the same. In writing, punctuation and context help signal whether the information is additional, but Basque does not reproduce the English comma rule mechanically.

Short relative clauses are extremely common in both speech and writing. Long clauses before a noun can be harder to process because the listener must wait for the head noun. Good style therefore favours a clear, manageable description; speakers may split very heavy information into separate clauses instead of stacking everything before one noun.

English tense labels do not always map one-to-one onto Basque forms. Erosi dudan liburua can be translated naturally as “the book I bought” or “the book I have bought,” depending on context. Learn the Basque construction as a unit rather than choosing its auxiliary from the English translation alone.

Beyond the Basics / Advanced Use

At B2 and beyond, relative constructions can appear without an overt head noun. This is a free relative: the clause itself means “the one that,” “what,” or “whatever.” The article or case ending attaches to the relative form:

• Nahi duzuna egin dezakezu. — “You can do what(ever) you want.”
• Esan duzuna egia da. — “What you said is true.”
• Etorri direnek badakite. — “Those who came know.”

Notice the endings: duzun + a → duzuna, and diren + ek → direnek. These are no longer simply a clause followed by a separate spoken noun; the determiner or case ending makes the omitted “thing/people” recoverable.

Advanced relatives can also encode relationships that English states with “in which,” “to whom,” or “whose.” Basque often relies on the head noun, the verb's agreement, or a more explicit construction when the relation might be unclear. This is an area where literal substitution from English is unreliable. Start with transparent patterns such as bizi naizen herria and joaten naizen eskola, then learn more complex postpositional relatives through complete examples.

Several -(e)n forms look alike but do different jobs. A relative clause modifies a noun: etorri den laguna (“the friend who came”). An embedded question can stand as the object of a verb: Ez dakit nor den (“I do not know who he/she is”). The visible ending is similar, but the first construction has a head noun and the second reports an unknown question.

Finally, more than one description may modify the same noun: atzo ikusi nuen eta gaur berriro etorri den gizona, “the man whom I saw yesterday and who came again today.” This is grammatical, but long stacked relatives demand careful agreement and are usually easier to understand in writing than in spontaneous conversation.

Practice Tips

1. Combine pairs of sentences. Write Liburu bat erosi dut. Liburua garestia da, then combine them as Erosi dudan liburua garestia da. Repeat with subjects, objects, and places.
2. Drill the auxiliary contrast. Keep one noun and change the person: ikusi dudan filma, ikusi duzun filma, ikusi duen filma, ikusi dugun filma. Say who saw it each time.
3. Read from the noun backwards. When a long Basque phrase feels difficult, first find the head noun at the end, then identify the relative verb immediately before it, and finally unpack the rest of the clause.

Related Concepts

• Prerequisite: Past Tense (Simple Past) — many common relative forms, such as nuen and zen, depend on recognising past auxiliaries.
• Next step: Subordinate Clauses — compare relative -(e)n with endings used for “that,” “because,” “although,” and “when” clauses.
• Next step: Advanced Relative Clauses — develop free relatives, implicit case relationships, and coordinated or stacked descriptions.