Major Noun Stem Classes: Contrasts and Learner Traps | Hungarian Grammar

The difficult part of Hungarian noun inflection is not recognizing a suffix; it is selecting the stem that stands before it. Similar citation forms can belong to different classes: gáz – gázok is regular, while ház – házak is lowering; motor – motorok is regular, while bokor – bokrok drops a vowel; autó – autók is regular, while ló – lovak has a v-stem.

This page is a decision guide. The forms page gives full paradigms, and the usage page develops them in context. All unlabeled judgments concern neutral modern standard Hungarian.

Matched class contrasts

Regular or productive	Changing comparison	What differs
gáz → gázok, gázt	ház → házak, házat	ordinary versus low linking vowel
motor → motorok, motort	bokor → bokrok, bokrot	stable versus disappearing vowel
tanár → tanárok, tanárt	madár → madarak, madarat	stable long vowel versus shortening
autó → autók, autót	ló → lovak, lovat	regular vowel-final versus v-stem
kávé → kávék, kávét	körte → körték, körtét	stable long é versus final short e that lengthens
őr → őrök	föld → földek	nonlowering versus lowering rounded-front stem

A házban nincs gáz, ezért a tulajdonos más fűtést keres.

There is no gas in the house, so the owner is looking for another form of heating.

A motorok mellett sűrű bokrok takarták el a kerítést.

Dense bushes hid the fence beside the motorcycles.

A tanárok az udvaron figyelték a madarakat.

The teachers watched the birds in the courtyard.

Surface resemblance can conceal different analyses. Tanár preserves long á in tanárok, whereas madár shortens it in madarak. Principal parts show the difference.

Lowering is not the same as vowel shortening

A lowering stem selects a low linking vowel: házak, házat, házam. A shortening stem changes a long stem vowel and is also lowering: nyár → nyarak, nyarat, nyaram; kéz → kezek, kezet, kezem. The two properties overlap, but they are not identical.

A házakat nyáron festik újra.

The houses are repainted in summer.

A hosszú nyarakat gyakran a nagyszüleimnél töltöttem.

I often spent the long summers at my grandparents' home.

Notice nyáron with long á, but nyarakat with short a. A consonant-initial case suffix may preserve the citation stem, while a linked plural or accusative form selects the shortened allomorph. Ház never alternates to haz-; its irregularity lies in the linking vowel.

Vowel-dropping versus an ordinary two-syllable stem

The shape CVCVC does not guarantee vowel loss. Bokor → bokrok and tükör → tükrök belong to a closed lexical class, but motor → motorok remains stable. Some high-frequency formal nouns also drop a vowel: kérelem → kérelmek, kérelmet, kérelmem.

A motorokat a bokrok mögé állították.

They parked the motorcycles behind the bushes.

A kérelmeket elektronikus úton is be lehet nyújtani.

Applications may also be submitted electronically. (formal)

Do not delete a vowel merely because the resulting cluster is pronounceable. Class membership is lexical. Conversely, do not preserve it in bokorok because English bushes keeps the full stem.

Lengthening versus an already-long final vowel

Final short a/e lengthens before many suffixes: alma → almák, almát, almában and körte → körték, körtét, körtével. Nouns already ending in long á/é simply retain that vowel: kávé → kávék, kávét.

Két körtét és három almát tettem a táskába, a kávét pedig a kezemben vittem.

I put two pears and three apples in the bag and carried the coffee in my hand.

There are suffixes and formations that do not trigger the productive lengthening, including -kor and -ként: órakor, példaként. Therefore “every suffix lengthens final a/e” is too broad. Learn the common nonlengthening suffixes as part of their own forms.

v-stems versus ordinary long-vowel stems

The long vowel does not predict a v-stem. Compare ló – lovak – lovat with autó – autók – autót, and kő – kövek – követ with nő – nők – nőt. V-stem membership is lexical and rare.

Két ló állt az autók mögött, mellettük három nő beszélgetett.

Two horses stood behind the cars, and three women were talking beside them.

Szó has an especially split paradigm: szavak, szavam, but ordinary singular accusative szót and superessive szón. It cannot be reduced to “always use szav- before a suffix.”

Egy szót javítottam, de a mondat többi szavát nem változtattam meg.

I corrected one word but did not change the other words in the sentence.

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Use principal parts to distinguish classes, but also record one consonant-initial case form. Nyár – nyarak – nyarat – nyáron reveals where shortening does and does not occur.

Number and count context do not create a new stem class

Hungarian uses singular nouns after numerals and many quantifiers: három ház, öt bokor, sok madár, két ló. The class reappears when case is added: három házat, öt bokrot, sok madarat, két lovat. There is no plural -k inside these phrases.

Sok madarat láttunk, de csak két lovat.

We saw many birds but only two horses.

This is neither gender agreement nor a special “count-noun declension.” The quantity expression suppresses morphological plural marking, while the noun's lexical stem class still controls its accusative form.

Suffix chains: do not restart from the dictionary form

In bokrokban, the plural has already selected bokr-; -ban then attaches outside -ok. In lovaimmal, lov- supports the possessed plural -ai-, possessive -m, and instrumental -mal. English expresses comparable relations with with my horses, four separate words.

A bokrainkban fészkelő madarakról készítettünk felvételeket.

We made recordings of the birds nesting in our bushes.

A lovaimmal kapcsolatos költségeket külön táblázatban vezetem.

I track the expenses related to my horses in a separate spreadsheet.

The inner allomorph persists. Forms such as bokorokban and lóaimmal incorrectly restart from the citation form.

Information structure changes order, not class

Hungarian can place a case-marked noun before the verb for focus. Its suffix and stem allomorph remain intact.

BOKROKAT ültettünk a kerítés mellé, nem virágokat.

We planted BUSHES beside the fence, not flowers.

KÉT LOVAT vett a gazda, nem hármat.

The farmer bought TWO HORSES, not three.

Corrective focus explains the word order and strong stress. It does not license bokorokat or két lovakat. Hungarian case endings continue to mark relations even when order changes.

Register-sensitive and lexical variation

Stem allomorphy itself is register-neutral. Kérelem – kérelmek is common in administration (formal); cucc – cuccok “stuff/things” is (informal) and regular. Using a casual noun does not relax its morphology, and using an abstract noun does not make an irregular form more prestigious.

A beérkezett kérelmek elbírálása harminc napot vesz igénybe.

Assessing the applications received takes thirty days. (formal)

A cuccokat betettem a kocsiba, a bőröndöket meg a csomagtartóba.

I put the stuff in the car and the suitcases in the trunk. (informal)

Some nouns show accepted lexical variation in particular forms, but no general register rule predicts it. A reliable current dictionary is the correct authority; analogy is only a hypothesis.

Decision tree

Is the noun after a numeral or quantity word? Keep it morphologically singular, then add any required case: két ló, but két lovat.
Does final short a/e precede a lengthening suffix? Use á/é: almát, körtével. Check known nonlengthening suffixes such as -kor/-ként.
Do the principal parts show a disappearing vowel? Use bokr-, tükr-, kérelm- in the specified forms.
Do they show vowel shortening? Use nyar-, kez-, viz-, madar- before linked plural, accusative, and possessive morphology.
Do they show inserted v? Use lov-, köv- where the paradigm requires it; remember the split szó/szav- family.
Is the stem lowering without another change? Select low linking vowels: házak, földek.
Otherwise, use the regular stem and harmonic suffix. Do not manufacture an irregularity from meaning, gender, or English spelling.
For a suffix chain, continue from the already built inner form. Never restart from the citation form.

Diagnostic exercise

Choose the standard form and explain the class.

“houses”: házak or házok?
“motors”: motorok or motrok?
“bushes”: bokrok or bokorok?
“in summer”: nyáron or nyaron?
“summers”: nyarak or nyárok?
“cars”: autók or autovak?
“three horses” as an object: három lovat or három lovakat?
“at six o'clock”: hat órakor or hat órákor?

Answers: (1) házak, a lowering stem. (2) motorok, a regular stable stem. (3) bokrok, a vowel-dropping stem. (4) nyáron, because this case form preserves the long-vowel stem. (5) nyarak, with shortening and low linking a. (6) autók, because autó is regular, not a v-stem. (7) három lovat: the numeral blocks plural -k, but accusative case selects lov-. (8) hat órakor: -kor does not trigger final-a lengthening.

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Do not classify by English meaning. Two nouns for physical objects may behave differently, while a concrete bokor and formal abstract kérelem both lose a vowel.

Common Mistakes

1. Preserving every citation-form vowel.

❌ A bokorokat tegnap megmetszettük.

Incorrect — bokor selects bokr- in the plural.

✅ A bokrokat tegnap megmetszettük.

We pruned the bushes yesterday.

2. Treating a shortening stem as merely lowering.

❌ Sok madárat láttunk a tónál.

Incorrect — madár shortens to madar- before the accusative ending.

✅ Sok madarat láttunk a tónál.

We saw many birds by the lake.

3. Extending the v-stem pattern from ló to autó.

❌ Az autovakat a szálloda előtt hagyták.

Incorrect — autó is a regular vowel-final noun.

✅ Az autókat a szálloda előtt hagyták.

They left the cars in front of the hotel.

4. Adding both numeral and plural marking.

❌ Két kezeket láttam az ablakban.

Incorrect — after két, use the morphologically singular accusative kezet.

✅ Két kezet láttam az ablakban.

I saw two hands in the window.

Key Takeaways

Similar-looking citation forms can belong to different classes; principal parts are decisive.
Lowering changes the linking vowel, while shortening and vowel-dropping change the stem itself.
Final-a/e lengthening is productive but has suffix-specific exceptions.
Numerals block plural marking without blocking case or lexical stem alternation.
Information structure and register do not override stem class; suffixes keep relations visible despite flexible order.

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