Derivational suffixes suggest a meaning, but the resulting word may be a transparent description, a conventional label, or a fully lexicalized item. The central learner trap is to treat Hungarian as if any visible ending could be detached and reused freely. The forms page presents the patterns; here we decide between neighboring derivatives and expose false boundaries.
-ás/-és event nouns versus -at/-et lexical results
Productive -ás/-és normally profiles an activity, occurrence, or process. Members of the -at/-et family often profile a conventional result or object, but they are not generated freely by one modern rule.
Az írás egész délután lekötött.
Writing kept me occupied all afternoon.
Az iratot személyesen kell benyújtani.
The document must be submitted in person.
A mondás eredetét senki sem ismeri pontosan.
Nobody knows the exact origin of the saying.
A mondat végéről lemaradt a pont.
The period was omitted from the end of the sentence.
Írás can also lexicalize as “a piece of writing,” and mondás can name a saying. The contrast is therefore not a perfect process/result equation. Irat and mondat have established dictionary meanings that must be learned.
-ó/-ő as a live participle versus a lexical noun
A live -ó/-ő phrase retains the verb's complements and describes the noun it modifies. A lexicalized -ó/-ő noun names a role, person, instrument, or place without asserting an event now.
A regényt olvasó nő leszállt a következő megállónál.
The woman reading the novel got off at the next stop.
A könyvtár olvasói új katalógust használhatnak.
The library's readers can use a new catalog.
In the first, a regényt is the accusative object inherited from olvassa a regényt. In the second, olvasó is a participant noun and takes plural -i after the possessive relation. The ending looks identical, but syntax reveals the difference.
Argument inheritance or noun-phrase possession?
Event nouns can preserve a verb's participant structure, but Hungarian expresses it inside the noun phrase. This can make an unmarked dependent ambiguous between actor, patient, and possessor.
A bizottság döntése mindenkit meglepett.
The committee's decision surprised everyone.
A pályázatok bizottság általi elbírálása két hétig tartott.
The applications' evaluation by the committee took two weeks. (formal)
The általi agent is (formal) and is useful when both agent and patient must be explicit. In ordinary speech, A bizottság két hét alatt bírálta el a pályázatokat is clearer. English piles up of and by phrases; Hungarian often chooses a finite clause instead of reproducing that pile.
-s or -i relational adjectives?
-s commonly characterizes something by what it has, contains, wears, or is marked by. -i relates it to a place, time, institution, or domain. A minimal change can alter the relationship.
A sarki pékségben teljes kiőrlésű, magvas kenyeret is árulnak.
The bakery on the corner also sells seeded whole-grain bread.
A megyei kenyérversenyt idén Szegeden rendezték meg.
This year's county bread competition was held in Szeged.
Magvas says the bread contains seeds. Megyei classifies the competition by institutional/geographic scope. Neither suffix has one fixed English equivalent: nyári ruha is “summer clothing,” while virágos ruha is “a floral dress.”
Nyári kabát helyett virágos esőkabátot vett.
Instead of a summer jacket, she bought a floral raincoat.
-ság/-ség quality nouns versus lexicalized nouns
When -ság/-ség transparently follows an adjective, it often names the corresponding quality: kedves → kedvesség, pontos → pontosság. But history can obscure the modern relationship.
A kedvessége sokat jelentett nekem azon a nehéz napon.
Her kindness meant a great deal to me on that difficult day.
Reggel az újságban olvastam a hírt.
I read the news in the newspaper this morning.
Analyzing újság synchronically as “new + -ness” predicts the wrong meaning. Likewise, vowel or consonant alternations may make a real family less visually simple: egész → egészség. Derivational meaning and established lexical meaning coexist.
-tlan/-tlen versus lexical negative adjectives
The privative suffix says that the base is absent: hibátlan “without flaws,” értelmetlen “without meaning/senseless.” Hungarian does not require it whenever English has un- or -less. Sometimes a separate adjective or the prefix nem is natural.
A másolat hibátlan, de az eredeti olvashatatlan.
The copy is flawless, but the original is illegible.
A magyarázat nem világos, ezért kérjünk egy példát.
The explanation is unclear, so let's ask for an example.
Nem világos is idiomatic; inventing világostalan is not. Even established privatives can lexicalize evaluatively: ízléstelen means “tasteless/in bad taste,” depending on context.
-nyi measure versus an exact case-marked duration
-nyi turns a measure expression into an adjective-like modifier meaning “that much/that size/worth.” A bare quantified noun plus a case suffix may instead locate an event in time or state its exact duration.
Háromórányi anyagot sűrítettek egyetlen előadásba.
They compressed three hours' worth of material into one lecture.
Három órán át tartott az előadás.
The lecture lasted for three hours.
The first modifies anyag by extent. The second uses három órán át as an adverbial duration. English “three-hour” can correspond to either construction, so syntax must guide the choice.
Long words: derivation, inflection, and lexicalization
Consider olvashatatlanságáról “about its illegibility”: olvas (lexical base “read”) + -hat (potential) + -atlan (privative) + -ság (quality noun) + -a (possessed third person) + -ról (delative “about”). Derivation creates new lexemes before possessive and case inflection locate the final noun in a sentence. Yet the established adjective olvashatatlan is processed by speakers as a familiar whole, not rebuilt consciously each time.
A kézírás olvashatatlanságáról már korábban is panaszkodtak.
People had complained about the illegibility of the handwriting before.
Decision tree
- Do you need an event or process from a verb? Try productive -ás/-és.
- Do you need “the person/thing doing X” or a participial modifier? Consider -ó/-ő, preserving verbal case frames.
- Are you naming a conventional result such as irat or mondat? Learn the lexical -at/-et word; do not coin it automatically.
- Do you need an abstract quality? -ság/-ség is often productive, but check for an established competing noun.
- Does an adjective mean “having/containing” or “related to”? Test -s against relational -i.
- Is the base absent, or is this simply an English negative adjective? Use -tlan/-tlen only for an established or clearly interpretable privative.
- Does a measure modify a following noun? Use -nyi; for duration, choose a temporal construction.
Diagnostic exercise
Choose the best form.
- “Submitting the form” as an activity: benyújtás / benyújtat.
- A student currently waiting for the teacher: a tanárra váró / a tanári váró diák.
- A city program: városos / városi program.
- Two hours' worth of recordings: kétórányi / két órán át felvétel.
Answers: (1) benyújtás, the productive event noun; benyújtat is not the required noun. (2) a tanárra váró, which inherits vár valakire; tanári means “teacher-related/for teachers.” (3) városi, the relational adjective. (4) kétórányi, because it modifies the quantity of recordings; két órán át modifies an event lasting two hours.
Common Mistakes
❌ A tanári váró diák a folyosón ült.
Wrong for ‘the student waiting for the teacher’: tanári is relational and váró lacks its required complement.
✅ A tanárra váró diák a folyosón ült.
The student waiting for the teacher was sitting in the corridor.
❌ Három órán át hanganyagot töltöttünk fel.
Wrong for the intended amount ‘three hours' worth of audio’: this says that the uploading lasted three hours.
✅ Háromórányi hanganyagot töltöttünk fel.
We uploaded three hours' worth of audio.
❌ A levél világostalansága miatt visszahívtam.
Incorrect invented privative: világostalan is not the standard word for unclear.
✅ Mivel a levél nem volt világos, visszahívtam.
Because the letter was unclear, I called back.
Key Takeaways
- Productivity is graded: -ás/-és is highly productive, while many -at/-et nouns are lexical entries.
- Participial -ó/-ő retains verbal complements; lexical -ó/-ő nouns behave like ordinary nouns.
- -s, -i, -tlan/-tlen, and -nyi encode relationships that English endings do not map one-to-one.
- Event nominals may inherit arguments, but finite clauses are often clearer than dense participant stacks.
- A reliable analysis separates derivation from outer inflection and allows for lexicalization at every stage.
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Start learning Hungarian →Related Topics
- Noun and Adjective Formation: Forms and Core PatternB1 — Form Hungarian event, participant, quality, relational, privative, and measure words while preserving harmony and argument structure.
- Noun and Adjective Formation: Meanings and UsageB1 — Use Hungarian derivational suffixes to name events, participants, qualities, relations, absences, and approximate quantities.
- Derivation and Inflectional Order: Contrasts and Learner TrapsB1 — Decide where Hungarian derivation ends, where inflection begins, and how harmony, lexicalization, and particles affect the boundary.
- Adjective-Forming and Privative Suffixes: Contrasts and Learner TrapsB2 — Choose among Hungarian adjective-forming suffixes by relation, presence, absence, possibility, measure, kind, and resemblance.
- Compound Nouns: Contrasts and Learner TrapsB2 — Distinguish lexical Hungarian compound nouns from descriptive phrases and inflect complex or lexicalized forms correctly.