Basic Adjectives in Basque

In Brief

A descriptive Basque adjective normally comes after the noun: etxe handi (“big house”). In a definite noun phrase, the ending that expresses the article and number goes on the last word, so “the big house” is etxe handia and “the big houses” is etxe handiak. Adjectives do not change for masculine or feminine gender.

Overview

An adjective is a describing word: English words such as “big,” “red,” “new,” and “interesting.” Basque calls an adjective an izenondo. The central A1 pattern is pleasantly regular: put the noun first and its descriptive adjective after it. Thus etxe handi is literally “house big,” and auto gorri is “car red.”

The ending is just as important as the order. Basque does not normally use a separate word equivalent to English “the.” Instead, a determiner ending (an ending that makes the noun phrase definite) appears at the end of the whole phrase. Compare etxea (“the house”) with etxe handia (“the big house”). The noun loses its own -a because -a now belongs on the final adjective.

This is one of the first structures learned at A1 because it lets you identify and describe everyday people and things. English-speaking learners need to reverse the English adjective–noun order and resist adding an ending to every word. Once those two habits are secure, the same pattern works with a large range of adjectives.

How It Works

The beginner pattern: noun + adjective + ending

The basic structure is:

noun stem + adjective stem + determiner ending

Meaning	Basque structure	Complete phrase
the big house	etxe + handi + -a	etxe handia
the big houses	etxe + handi + -ak	etxe handiak
the red car	auto + gorri + -a	auto gorria
the new books	liburu + berri + -ak	liburu berriak

In these basic forms, -a marks definite singular and -ak marks definite plural. They attach to the end of the noun phrase, not automatically to the noun itself. A noun phrase is simply a noun together with the words that belong with it, such as “the large house.”

This means that etxea handia is not the normal way to build the single phrase “the big house.” That sequence can instead be part of a sentence: Etxea handia da, “The house is big.” The verb da (“is”) makes the two parts clear.

No gender agreement

Basque has no grammatical masculine–feminine adjective agreement. The adjective stem stays the same whether it describes a man, a woman, or an object:

Basque	English
gizon altua	the tall man
emakume altua	the tall woman
eraikin altua	the tall building

The ending in all three examples is determined by definiteness and number, not by gender. This differs from languages such as Spanish or French. It also differs from English in one useful way: although English adjectives do not show gender either, Basque does mark the end of a definite phrase.

Singular and plural

The adjective does not acquire a special plural stem. Number is shown by the final determiner:

Singular	Plural	English
etxe txikia	etxe txikiak	the small house / the small houses
auto berria	auto berriak	the new car / the new cars
liburu interesgarria	liburu interesgarriak	the interesting book / the interesting books

Do not add an English-style plural ending to the noun as well. In etxe handiak, the final -ak is enough to mark the whole phrase as plural in its basic, unmarked role.

Indefinite phrases with bat

Basque has no separate indefinite article exactly equivalent to English “a/an.” The number bat (“one”) commonly performs that job and comes after the adjective:

Pattern	Basque	English
noun + adjective + bat	etxe handi bat	a big house
noun + adjective + bat	auto gorri bat	a red car
noun + adjective + bat	liburu interesgarri bat	an interesting book

Notice that the adjective is bare: handi, not handia. The final determiner is bat, so the definite ending -a is not added.

After numbers and many quantity words, the phrase is also normally indefinite, or mugagabea (“unbounded/non-determined”):

• bi etxe handi — two big houses
• hiru auto berri — three new cars
• liburu interesgarri asko — many interesting books

English marks “houses” and “cars” as plural here; Basque does not add -ak after an explicit number in this basic pattern.

Adjectives with izan (“to be”)

To say that something is a certain way, use the appropriate form of izan. The thing being described comes first, and the adjective is the predicate (the part that says what the subject is like):

• Sagarra txikia da. — The apple is small.
• Etxea handia da. — The house is big.
• Etxeak handiak dira. — The houses are big.

In a simple definite statement, both the subject and the adjective commonly show their own definite singular or plural form. Singular da means “is”; plural dira means “are.” This is different from a single noun phrase: compare etxe handia (“the big house”) with etxea handia da (“the house is big”).

Basque often omits a pronoun that English would require when context makes the subject clear. Consequently, Liburu interesgarria da can be understood in context as “It is an interesting book.” The same visible sequence may also be read as “The book is interesting” in a suitable context, so surrounding conversation matters.

More than one adjective

Several descriptions can follow one noun. A very clear beginner pattern joins them with eta (“and”):

• etxe handia eta ederra — the big and beautiful house
• auto txikia eta berria — the small and new car
• katu beltza eta lasaia — the black and calm cat

In coordinated descriptions like these, each adjective may carry the determiner ending. For early production, using eta is safer and clearer than trying to stack a long string of adjectives. Natural adjective order can depend on meaning and emphasis, just as English speakers choose between different possible orders.

Intensifying an adjective

Put oso (“very”) before the adjective it strengthens:

• etxe oso handia — the very big house
• liburu oso interesgarria — the very interesting book
• Oso polita da. — It is very pretty.

Here oso does not take the article ending. The ending remains on the final adjective.

Examples in Context

Basque	English	Note
Etxe handia herriaren erdian dago.	The big house is in the middle of the town.	Definite singular phrase
Auto gorria kalean dago.	The red car is in the street.	Adjective follows the noun
Sagarra txikia da.	The apple is small.	Predicative adjective with da
Liburu interesgarria da.	It is an interesting book.	Context supplies the English “it”
Etxe txiki bat nahi dut.	I want a small house.	Indefinite bat comes last
Bi poltsa handi ditugu.	We have two large bags.	No definite plural -ak after bi
Liburu berri hauek interesgarriak dira.	These new books are interesting.	Demonstrative subject; plural predicate
Katu beltza ikusi dut.	I have seen the black cat.	Definite phrase as an object
Kafea beroa dago.	The coffee is hot.	A temporary state commonly uses egon
Miren oso atsegina da.	Miren is very pleasant.	oso intensifies the adjective
Gela hau argia eta lasaia da.	This room is bright and quiet.	Two coordinated descriptions
Oinetako zaharrak ez dira erosoak.	The old shoes are not comfortable.	Plural subject and plural adjective

Common Mistakes

Putting the adjective before the noun

• Wrong: handia etxea
• Right: etxe handia
• Why: Ordinary descriptive adjectives follow the noun in Basque. English uses the opposite order in “the big house.”

Leaving the article on the noun inside one phrase

• Wrong: etxea handia for “the big house”
• Right: etxe handia
• Why: In one noun phrase, the definite ending goes on the final element. Be careful: Etxea handia da is correct as the complete sentence “The house is big.”

Marking every word as plural

• Wrong: etxeak handiak for the noun phrase “the big houses”
• Right: etxe handiak
• Why: The final -ak marks the whole noun phrase. Etxeak handiak dira is different: it is a sentence, “The houses are big.”

Using the definite ending with bat

• Wrong: etxe handia bat
• Right: etxe handi bat
• Why: Bat makes the phrase indefinite (“a/one”), so the adjective does not also take definite -a.

Copying English plural marking after a number

• Wrong: bi etxe handiak for a neutral “two big houses”
• Right: bi etxe handi
• Why: After a number, Basque normally uses the indefinite form rather than definite plural -ak. A definite phrase can occur in a more specific context, but it does not express the neutral beginner meaning.

Looking for masculine and feminine forms

• Wrong idea: learning separate masculine and feminine equivalents of altu
• Right: gizon altua and emakume altua
• Why: Basque adjectives do not agree in grammatical gender. Learn one adjective stem, then apply the determiner and case endings required by the whole phrase.

Usage Notes

Dictionary and vocabulary-list forms are not always presented consistently. You may meet an adjective as a bare stem, such as handi, or in the frequent definite form handia. Learn to recognise the removable final -a: txikia is built from txiki + -a, and berria from berri + -a. Do not assume every final a is an article, however; some word stems naturally end in a, and their forms must be learned from reliable examples.

Basque distinguishes a characteristic from a state in some descriptions. Izan commonly classifies or characterises: Gela handia da (“The room is big”). Egon often describes a condition or location: Kafea beroa dago (“The coffee is hot”). This distinction extends beyond basic adjective placement, so at A1 it is best to learn common expressions as complete sentences rather than replacing da with dago mechanically.

English can use a bare adjective after “seem,” “become,” and many other verbs. Basque has its own constructions for these meanings. The safe first pattern is a definite subject plus adjective plus da/dira.

Beyond the Basics

You do not need to master the following details yet, but they explain forms you will soon encounter.

Case endings replace the basic article form

Basque uses cases—endings that show a phrase's role, such as “in,” “to,” or “with.” These endings attach at the right edge of the complete noun phrase, where the basic determiner ending also appears:

• etxe handian — in the big house
• etxe handira — to the big house
• etxe handitik — from the big house
• etxe handiarekin — with the big house

The adjective still follows the noun, and only the last word carries the phrase-final case marking. This “build the phrase, then mark its end” principle is one of the most useful patterns in Basque grammar.

Demonstratives occupy the final determiner position

With hau (“this”), hori (“that”), and hura (“that over there”), the demonstrative normally follows the noun and adjective:

• etxe handi hau — this big house
• auto gorri hori — that red car
• mendi altu hura — that tall mountain over there

The adjective remains bare because the demonstrative determines the phrase. In declined forms, the relevant case marking appears on the demonstrative.

Adjectives can become noun-like

When the noun is obvious, an adjective can stand on its own with a determiner ending:

• handia — the big one
• txikiak — the small ones
• gorria nahi dut — I want the red one

English adds “one” or “ones”; Basque can let the determined adjective carry that meaning by itself.

Comparison changes the adjective stem

At B1, you will meet -ago for comparatives and -en for superlatives. These come before the determiner ending:

• handiagoa — bigger / the bigger one
• handiena — the biggest

The familiar final -a is still visible. The new material has been inserted between the adjective stem and the determiner.

Finally, not every modifier before a noun behaves like an ordinary descriptive adjective. Fixed compounds and classifying elements can have their own order. Treat the post-noun rule as the strong beginner rule for qualities such as size, colour, age, and evaluation, not as a claim that no Basque modifier can ever precede a noun.

Practice Tips

1. Transform one phrase four ways. Start with etxe handi and produce etxe handia, etxe handiak, etxe handi bat, and bi etxe handi. Repeat with five common nouns and adjectives.
2. Contrast phrases with sentences. Say auto gorria (“the red car”), then Autoa gorria da (“The car is red”). This directly trains the difference that causes the most English-speaker errors.
3. Describe your surroundings aloud. Choose objects you can see and use short patterns such as Mahai handia da, Katu beltza da, or Bi aulki txiki daude. Check that the adjective follows the noun and that the final ending matches the phrase.

Related Concepts

• Prerequisite: Articles and Determiners — explains -a, -ak, and bat before they are combined with adjectives
• Next step: Colours — applies the adjective pattern to everyday colour words
• Next step: Describing People — expands the vocabulary for appearance and character
• Later: Comparatives and Superlatives — builds forms such as handiagoa and handiena