Dutch prefixes do two very different jobs, and confusing them is a classic intermediate stumble. One family — be-, ver-, ont-, her-, and ge- — attaches to verbs to make new verbs with shifted meanings, and these prefixes behave in a special way: they are unstressed, they never detach from the verb, and they take no ge- in the past participle. The other prefix, on-, attaches to adjectives and nouns and simply negates them, exactly like English un- or in-. This page treats the verb prefixes first, because their participle behaviour trips up nearly every learner, then turns to on-.
The inseparable verb prefixes
Be-, ver-, ont-, her-, and ge- share three defining traits. They are inseparable (they stay glued to the verb in every position, never splitting off the way opbellen splits into bel ... op). They are unstressed — the stress falls on the verb stem, not the prefix (ver-WER-ken, not VER-werken). And, the consequence learners must drill, they take no ge- in the past participle, because Dutch refuses to stack an unstressed ge- in front of an already unstressed prefix.
| Prefix | Core meaning | Infinitive | Participle (no ge-!) |
|---|---|---|---|
| be- | makes a verb act on a direct object | bewerken (to edit/work on) | bewerkt |
| ver- | change, away, wrong, completion | verwerken (to process) | verwerkt |
| ont- | un-, away from, beginning | ontkomen (to escape) | ontkomen |
| her- | re-, again | herhalen (to repeat) | herhaald |
| ge- | fused, often perfective | geloven (to believe) | geloofd |
be-: turning a verb onto an object
Be- typically makes an intransitive verb transitive — it gives the action a direct object. Werken aan iets (to work on something) becomes iets bewerken (to work on / edit something); spreken over iets (to speak about) becomes iets bespreken (to discuss something); antwoorden (to answer) becomes iets beantwoorden (to answer something).
Ik heb de foto's gisteren bewerkt.
I edited the photos yesterday. Participle of 'bewerken' is 'bewerkt' — no ge-.
We hebben het plan uitvoerig besproken.
We discussed the plan in detail. 'Bespreken' → 'besproken', no ge-.
ver-: change, away, or wrong
Ver- is the busiest prefix. It signals change of state (kleuren to colour → verkleuren to discolour), moving away (trekken to pull → vertrekken to depart), doing something wrong (slapen to sleep → zich verslapen to oversleep), and using something up (kopen to buy → verkopen to sell off). When you meet an unfamiliar ver- verb, "something changed, went away, or went wrong" is a good first guess.
De gordijnen zijn in de zon verkleurd.
The curtains have discoloured in the sun. ver- = change of state; participle 'verkleurd', no ge-.
De trein is al vertrokken.
The train has already left. ver- = away; 'vertrekken' → 'vertrokken'.
Sorry dat ik te laat ben — ik heb me verslapen.
Sorry I'm late — I overslept. ver- = something went wrong; 'verslapen', no ge-.
ont-: un-, away, or beginning
Ont- often undoes or removes (dooien to thaw → ontdooien to defrost; spannen to tension → ontspannen to relax), signals escape or separation (komen → ontkomen to escape; snappen → ontsnappen to break out), or marks the start of a process (branden → ontbranden to ignite). It is the closest verb-prefix to English un-/dis-.
De gevangene is vannacht ontsnapt.
The prisoner escaped last night. ont- = away/escape; 'ontsnapt', no ge-.
Na het werk wil ik gewoon even ontspannen.
After work I just want to relax for a bit. ont- on 'spannen' = un-tension → relax.
her-: re-, again
Her- is the cleanest of all: it means "again," exactly like English re-. Halen (to fetch) → herhalen (to repeat); bouwen (to build) → herbouwen (to rebuild); gebruiken (to use) → hergebruiken (to reuse); kennen → herkennen (to recognise, lit. re-know).
Kun je de vraag nog een keer herhalen?
Can you repeat the question once more? her- = re-/again; 'herhalen' → 'herhaald'.
Ik herkende haar meteen aan haar stem.
I recognised her at once by her voice. her- + kennen = recognise; 'herkende', no ge-.
The negating prefix: on-
On- is a completely different animal. It attaches not to verbs but to adjectives and nouns, and it simply negates them — it is the precise counterpart of English un- and in-. Mogelijk (possible) → onmogelijk (impossible); aardig (nice) → onaardig (unkind); geluk (luck/happiness) → ongeluk (accident/misfortune); zin (sense) → onzin (nonsense); duidelijk (clear) → onduidelijk (unclear).
Unlike the verb prefixes, on- is usually stressed (ON-mogelijk), which is part of why it reads as an emphatic negation.
Het is onmogelijk om alles op tijd af te krijgen.
It's impossible to finish everything on time. on- = un-/im-; mogelijk → onmogelijk.
Dat was echt onaardig van hem.
That was really unkind of him. on- + aardig = unkind.
Hij raakte gewond bij een ongeluk.
He was injured in an accident. on- + geluk (luck) → ongeluk (misfortune/accident).
on- versus niet
Both translate as "not," but they are not interchangeable. On- builds a fixed, lexical opposite — a permanent word with its own dictionary entry (onmogelijk, onbekend, ongezond). Niet is the sentence adverb that negates a clause or a specific word on the fly. You say Het is onmogelijk (it is impossible — an inherent property), but Het is niet mogelijk vandaag (it isn't possible today — a one-off circumstance). Reach for on- only when the negated word is an established item; otherwise use niet.
Deze paddenstoel is ongezond.
This mushroom is unhealthy. 'Ongezond' is a fixed lexical opposite of 'gezond'.
Deze paddenstoel is niet gezond voor honden.
This mushroom isn't healthy for dogs. A one-off, clause-level negation → 'niet', not 'on-'.
A brief note on intensifying prefixes
Beyond negation, a few prefixes simply intensify. Aarts- and oer- push an adjective to its extreme: aartslui (bone-idle, "arch-lazy"), aartsvijand (arch-enemy), oeroud (ancient, "primordially old"), oersaai (deadly dull). They are emphatic and somewhat colloquial, and they are not productive in the way on- is, but they are worth recognising.
Die rotsen zijn oeroud.
Those rocks are ancient. oer- intensifies 'oud' (old) → primordially old.
Common Mistakes
❌ Ik heb het rapport gebewerkt.
Incorrect — the inseparable prefix be- takes no ge- in the participle.
✅ Ik heb het rapport bewerkt.
I edited the report. The participle of 'bewerken' is just 'bewerkt'.
❌ De trein is gevertrokken.
Incorrect — ver- is inseparable and unstressed, so no ge-.
✅ De trein is vertrokken.
The train has left. Participle of 'vertrekken' is 'vertrokken'.
❌ Het is niet-mogelijk om dat te doen.
Incorrect — for the fixed opposite, use the prefix on-, not a hyphenated 'niet'.
✅ Het is onmogelijk om dat te doen.
It's impossible to do that. The lexical opposite is 'onmogelijk'.
❌ Ik moet dit hoofdstuk reherhalen.
Incorrect — 'her-' already means 're-'; don't stack an English 're-' on top.
✅ Ik moet dit hoofdstuk herhalen.
I have to repeat this chapter. her- = re-/again on its own.
❌ Dat is on waar.
Incorrect — on- is a prefix glued to the word, never a separate particle.
✅ Dat is onwaar.
That's untrue. on- + waar = untrue, written solid.
Key Takeaways
- The verb prefixes be-, ver-, ont-, her-, ge- are inseparable and unstressed, and they take no ge- in the participle: bewerkt, verwerkt, herhaald — never gebewerkt.
- Quick meanings: be- makes a verb take an object; ver- = change/away/wrong; ont- = un-/away/begin; her- = re-/again.
- on- negates adjectives and nouns (onmogelijk, onaardig, ongeluk) and is usually stressed — the counterpart of English un-/in-.
- Use on- only for fixed lexical opposites; use niet for one-off, clause-level negation (onmogelijk vs niet mogelijk vandaag).
- aarts- and oer- intensify (aartslui, oeroud) and are emphatic/colloquial.
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