To say something is not just mooi but very mooi, you put a degree word in front of it. Dutch has several words for "very" — heel, erg, zeer — and the single most useful thing to know is that they are not interchangeable in tone: zeer sounds formal and a bit stiff, erg is neutral, and heel is the everyday default. Pick the wrong one and you won't be misunderstood, but you'll sound off-register — a textbook giveaway. This page sorts the boosters (words that turn the dial up) from the downtoners (words that turn it down), labels each for register, and then handles the one genuinely tricky point: heel itself sometimes takes an -e before an attributive adjective (een heel mooie vs een hele mooie dag).
The three "very" words: heel, erg, zeer
All three translate as "very," but they live in different registers. Use this as your default sorting:
| Word | Register | When to reach for it |
|---|---|---|
| heel | common, everyday | your safe default in speech — heel mooi |
| erg | neutral | fine everywhere; slightly leans to negatives — erg duur |
| zeer | formal / written | letters, speeches, formal prose — zeer geachte |
Het was heel mooi weer, dus we zijn gaan wandelen.
The weather was very nice, so we went for a walk. — heel: the everyday default.
Die nieuwe telefoon is erg duur, vind je niet?
That new phone is very expensive, don't you think? — erg: neutral, and comfortable with a negative adjective.
Zeer geachte heer De Vries, ...
Dear Mr De Vries, ... — 'zeer geachte' opens a formal letter; 'zeer' here is unmistakably formal register. (formal)
A note on erg: on its own it means "bad" (Dat is erg — "that's bad"), and as an intensifier it pairs especially naturally with unpleasant adjectives (erg moe, erg koud, erg vervelend) — though it works with positive ones too (erg leuk, erg lief). Zeer, by contrast, as a standalone adjective/noun means "pain/sore" (pijn en zeer), but as an intensifier it is purely the formal "very."
The heel / hele puzzle: when "very" inflects
Now the point that catches everyone. As an intensifier, heel is logically an adverb ("very"), and adverbs don't inflect — so you'd expect it always to stay heel. In the predicate, that's exactly right:
Die dag was heel mooi.
That day was very beautiful. — predicate position: heel stays bare, always.
But in attributive position — heel + adjective + noun — Dutch speakers optionally inflect heel to hele, treating it almost as if it were an adjective itself agreeing with the noun. Both versions are correct and both are common; the inflected hele is the more colloquial, the bare heel slightly more careful/written:
een heel mooie dag
a very beautiful day — heel left bare (more careful/written register).
een hele mooie dag
a very beautiful day — heel inflected to hele (more colloquial, extremely common in speech).
These two phrases mean exactly the same thing. This is a living variation in the language, not a right-versus-wrong split: you will hear een hele mooie dag constantly, and you'll read een heel mooie dag in edited prose. Learn to recognise both and pick whichever fits your register.
Wat een hele lieve hond heb jij!
What a really sweet dog you've got! — spontaneous, warm speech naturally takes 'hele'. (informal)
Dit is een heel belangrijk besluit.
This is a very important decision. — careful/neutral register keeps 'heel' bare.
Two clarifications that prevent confusion. First, heel meaning "whole/entire" is a genuine adjective and inflects by the ordinary rule, independently of all this: de hele dag ("the whole day"), een heel brood ("a whole loaf"). Don't confuse the intensifier hele/heel with the adjective heel ("whole"). Second, the optional inflection is specifically the attributive intensifier case; in the predicate (de dag was heel mooi) it never inflects.
Downtoners: turning the dial down
Not every modifier intensifies. A set of words means roughly "fairly / rather / quite" and lowers the degree to something moderate. The three core ones — nogal, tamelijk, vrij — are close in meaning ("fairly," "rather") with small flavour differences.
| Word | Force | Note |
|---|---|---|
| vrij | fairly, quite | neutral; also means "free" — context disambiguates |
| tamelijk | fairly, reasonably | slightly more formal/written |
| nogal | rather, pretty | often a hint of surprise or mild disapproval |
Het is vandaag nogal koud voor de tijd van het jaar.
It's rather cold today for the time of year. — nogal carries a faint 'more than I expected' note.
De film was vrij lang, maar zeker de moeite waard.
The film was fairly long, but definitely worth it. — vrij = fairly/quite.
Het examen was tamelijk moeilijk, maar te doen.
The exam was fairly difficult, but doable. — tamelijk, a touch more formal than vrij.
A common spoken downtoner not in the table is best (unstressed): Dat is best lekker — "That's pretty tasty / actually quite nice," with an undertone of "better than I expected." It is very frequent in informal speech.
Het was best leuk, eigenlijk.
It was actually pretty fun. — 'best' (informal downtoner) with a note of pleasant surprise.
Colloquial boosters: hartstikke, ontzettend, knap, behoorlijk
Beyond the neutral heel/erg, spoken Dutch has a rich set of emphatic boosters meaning "really / incredibly." These carry colour and register, so label them in your head:
| Word | Force / register |
|---|---|
| hartstikke | "really / totally" — very informal, warm, conversational |
| ontzettend | "incredibly / terribly" — strong, common in speech and writing |
| behoorlijk | "quite / considerably" — neutral-to-emphatic |
| knap | "pretty / rather" (as a degree word) — informal |
Bedankt, dat is hartstikke aardig van je!
Thanks, that's really kind of you! — hartstikke: warm, very informal. Note the spelling: hart-stik-ke. (informal)
Het was ontzettend druk in de stad vandaag.
It was incredibly busy in town today. — ontzettend: a strong, everyday booster.
De tentoonstelling was behoorlijk indrukwekkend.
The exhibition was quite impressive. — behoorlijk: neutral-to-emphatic.
Het is knap lastig om hier een parkeerplek te vinden.
It's pretty tricky to find a parking spot here. — knap as a degree word (informal); distinct from knap = 'good-looking/clever'.
A vivid colloquialism: hartstikke even pairs with strong words for emphasis — hartstikke goed ("really good"), and in very casual speech hartstikke gek ("totally crazy"). And ontzettend, though literally "terribly," works with positive adjectives too: ontzettend leuk, ontzettend lief — exactly like English "terribly kind."
Common Mistakes
The errors are about register (over-using zeer), the heel/hele inflection, and the spelling of the colloquial boosters.
❌ De koffie is hier zeer lekker.
Not wrong, but off-register — in casual speech this sounds stiff/formal. Say: 'De koffie is hier heel lekker' (or erg lekker).
✅ De koffie is hier heel lekker.
The coffee here is very nice.
❌ Die dag was hele mooi.
Incorrect — in the PREDICATE, heel never inflects: 'die dag was heel mooi'. The optional -e is only attributive.
✅ Die dag was heel mooi.
That day was very beautiful.
❌ een heel hele dag (meaning 'a very nice day')
Confusing the two heels — intensifier vs 'whole'. 'A very nice day' = een heel/hele mooie dag; 'the whole day' = de hele dag. Don't blend them.
✅ een hele mooie dag / de hele dag
a very nice day / the whole day.
❌ Dat is harstikke aardig.
Misspelling — it's hartstikke (with the t of 'hart' and double k): 'Dat is hartstikke aardig.'
✅ Dat is hartstikke aardig.
That's really kind.
❌ Het is best wel heel erg ontzettend druk.
Stacking boosters — piling intensifiers sounds clumsy and childish. Pick one: 'Het is ontzettend druk' or 'Het is heel druk'.
✅ Het is ontzettend druk.
It's incredibly busy.
Key Takeaways
- Three words for "very," sharply split by register: heel (everyday default), erg (neutral, leans negative), zeer (formal/written — zeer geachte).
- Don't over-use zeer in speech; it sounds like a business letter. Default to heel or erg.
- heel optionally inflects before an attributive adjective: een heel mooie dag (careful) = een hele mooie dag (colloquial). Both are correct; in the predicate it never inflects (was heel mooi).
- Distinguish the intensifier heel/hele from the adjective heel = "whole" (de hele dag).
- Downtoners lower the degree: nogal, vrij, tamelijk ("fairly/rather"), plus informal best.
- Colloquial boosters: hartstikke (warm, informal — mind the spelling), ontzettend (strong, works with positives), behoorlijk, knap. Don't stack multiple intensifiers.
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Start learning Dutch→Related Topics
- Comparison of Adverbs: Sneller, Het Snelst, Beter, LieverB1 — How Dutch builds comparative and superlative adverbs — regular -er / het …-st (sneller, het snelst), the irregular sets goed→beter→best, veel→meer→meest, weinig→minder→minst, and the preference trio graag→liever→liefst. Covers why Dutch adds -er rather than 'more' (no 'meer snel'), the het …-st superlative shape, and the dan vs als comparison word.
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- The Comparative (-er)A2 — How Dutch forms the comparative with -er, why -r adjectives insert -d- (duurder), and why 'than' must be dan, not als, after a comparative.
- Predicate vs Attributive AdjectivesA1 — An adjective before a noun (attributive) may take -e; an adjective after a linking verb like zijn (predicate) never does. Recognising which slot you're in tells you instantly whether the -e rule even applies — and the predicate slot behaves exactly like English.