When two vowels collide in Afrikaans — when the end of one chunk of word runs straight into the start of another and the eye would read them as a single sound — the language pulls them apart. It has two tools for the job: the diaeresis (the two dots, as in reën, koöperasie) and the hyphen (as in see-eend, na-aap). Most references hand you these as two unrelated spelling lists to memorise. They are not unrelated. They are the same hiatus-breaking strategy operating at two different morphological levels, and once you see that, the choice between them stops being arbitrary.
This page is only about which device to use. For the internal logic of the diaeresis itself — where it lands, why it migrates under inflection — see spelling with the diaeresis. Here the single question is: dots, or a dash?
The one rule behind both devices
Start with the shared problem. Afrikaans, like English, lets certain vowel pairs fuse into one unit on the page: ee reads as one long vowel, oo as another, aa as a single long a. When the spelling of a word happens to put two vowels side by side that should not fuse — that belong to genuinely separate syllables — the reader needs a signal to keep them apart. That signal is what both the diaeresis and the hyphen provide.
The choice between them comes down to where the boundary sits:
If the colliding vowels meet inside a single word or derivation, use the diaeresis. If they meet at the seam of a compound — where two whole words have been joined — use the hyphen.
That is the whole rule. The diaeresis handles hiatus within a morpheme or across a prefix/suffix boundary that does not produce a full compound; the hyphen handles hiatus between the parts of a compound. Same goal, different scale.
Within a word: the diaeresis
When the vowel clash arises inside a simple word, in a derived form, or across a prefix that is not forming a true compound, the deelteken — the two dots — goes on the second vowel to mark the fresh syllable.
| Word | Syllables | Meaning |
|---|---|---|
| reën | re-ën | rain |
| koöperasie | ko-ö-pe-ra-sie | cooperation |
| geëet | ge-ëet | eaten |
| beïnvloed | be-ïn-vloed | to influence |
| geërf | ge-ërf | inherited |
| voëls | vo-ëls | birds |
Dit het die hele naweek gereën, so ons het binne gebly.
It rained all weekend, so we stayed inside.
Die twee dorpe werk in noue koöperasie aan die projek.
The two towns are working in close cooperation on the project.
Ons het reeds geëet teen die tyd wat hulle opdaag.
We had already eaten by the time they arrived.
The key fact for this page is negative: in every one of these words the boundary is a prefix or a suffix joining onto a single base — ge- + eet, be- + invloed, the plural -e opening up voël. None of them is two free-standing words stuck together. That is precisely why they take dots and not a dash.
At a compound seam: the hyphen
Now the contrast. When you build a compound — two words that each exist independently, joined into one — and the join happens to put two same or fusing vowels against each other, Afrikaans does not reach for the diaeresis. It writes a hyphen at the seam.
| Compound | Parts | Meaning |
|---|---|---|
| see-eend | see + eend | sea duck / scoter |
| na-aap | na + aap | to imitate / ape |
| ski-oord | ski + oord | ski resort |
| see-engel | see + engel | angelfish / sea angel |
| auto-ongeluk | auto + ongeluk | car accident |
| radio-omroep | radio + omroep | radio broadcast |
Ons het 'n hele swerm see-eende oor die baai sien vlieg.
We saw a whole flock of scoters flying over the bay.
Hou op om jou ouboet na te aap — wees jouself.
Stop imitating your big brother — be yourself.
Hulle gaan elke winter na 'n ski-oord in die Drakensberge.
They go to a ski resort in the Drakensberg every winter.
Why a hyphen here rather than dots? Because the reader needs to see two whole words. See-eend is see (sea) plus eend (duck); writing it seëend would hide the seam and invite the eye to read seë (the plural of see) plus a stray -end. The hyphen keeps the morphology transparent: it says "a word boundary lives here", which the diaeresis cannot say. The dots only ever signal "new syllable"; the hyphen signals "new word".
The minimal pair that proves the principle
The cleanest way to feel the rule is to hold two words that look almost identical side by side and watch the boundary decide the device.
Take geëet and na-aap. Both have a vowel collision; both need to be broken. But geëet is ge- (a prefix) welded onto the single verb eet — one word, one derivation — so the dots split the syllables: ge-ëet. Na-aap is na (after) plus aap (ape) — two independent words forming a compound verb — so the hyphen marks the seam: na-aap. Same clash, different boundary, different tool.
| Form | Boundary type | Device |
|---|---|---|
| geëet | prefix + base (one word) | diaeresis |
| na-aap | word + word (compound) | hyphen |
| koöperasie | within a single derived word | diaeresis |
| see-eend | word + word (compound) | hyphen |
Die kind het die hele dag sy ma na-geaap.
The child imitated his mother all day long.
This is the insight competitors leave out: the diaeresis and the hyphen are not two arbitrary spelling conventions to be memorised separately. They are one principle — break the hiatus — applied at two levels of word structure. Decide the level, and the device follows automatically.
A note on prefixes that look like compounds
One genuine grey zone deserves honesty. Some prefixes sit close to the line between derivation and compounding, and Afrikaans sometimes uses a hyphen with them for clarity even though no second free word is involved — particularly with foreign or learned prefixes before a vowel (auto-, radio-, mini-, re- in some loans). Here the hyphen is doing the same readability job as in a compound: keeping the prefix visibly distinct so the vowels do not fuse. Auto-ongeluk and radio-omroep take a hyphen, not dots, even though auto and radio are bound elements, because treating them like a compound seam keeps the long loanword legible.
Do not over-extend this. Native prefixes like ge-, be-, ver-, her- and the -e suffix take the diaeresis, not a hyphen: it is geëet, beïnvloed, geërf, voëls — never ge-eet or be-invloed. The hyphen-for-prefix option is reserved for the loan and learned prefixes where the seam would otherwise be hard to parse.
Daar was 'n erge auto-ongeluk op die N1 vanoggend.
There was a serious car accident on the N1 this morning.
How English misleads you
English gives you almost no practice with either device, which is exactly why both feel foreign. English long ago abandoned the diaeresis (cooperate, not coöperate; naive, not naïve for most writers) and uses the hyphen loosely and inconsistently. So the English-speaking learner arrives with two bad instincts: drop the dots as optional decoration, and sprinkle hyphens by feel.
Neither works in Afrikaans, where both devices are obligatory and rule-governed. Leaving the diaeresis off geëet is a spelling error; writing see-eend with dots as seëend is also an error — and a confusing one, because it accidentally spells something else. Retrain the instinct around the single question of the boundary: inside a word, dots; at a compound seam, dash.
Common mistakes
❌ Ons het 'n seëend op die water gesien.
Incorrect — see + eend is a compound, so it takes a hyphen, not dots: see-eend.
✅ Ons het 'n see-eend op die water gesien.
We saw a scoter on the water.
❌ Hou op om my na te ge-aap.
Incorrect — na-aap is a compound and takes a hyphen at the seam: na-aap (na-geaap).
✅ Hou op om my na te aap.
Stop imitating me.
❌ Ons het reeds ge-eet.
Incorrect — ge- + eet is a single derived word, so it takes the diaeresis: geëet, not a hyphen.
✅ Ons het reeds geëet.
We have already eaten.
❌ Die twee firmas werk in ko-operasie.
Incorrect — koöperasie is one word; the collision inside it takes the diaeresis, not a hyphen.
✅ Die twee firmas werk in koöperasie.
The two firms are working in cooperation.
❌ Hulle gaan na 'n skioord.
Incorrect — ski + oord is a compound; the seam needs a hyphen: ski-oord.
✅ Hulle gaan na 'n ski-oord.
They are going to a ski resort.
Key takeaways
- The diaeresis and the hyphen solve the same problem — colliding vowels that must not fuse — at two different levels of word structure.
- Collision inside a single word or derivation (prefix/suffix + base) takes the diaeresis: reën, koöperasie, geëet, beïnvloed.
- Collision at a compound seam (word + word) takes the hyphen: see-eend, na-aap, ski-oord.
- The hyphen carries extra information the dots cannot: it shows where one whole word ends and the next begins, keeping the compound legible.
- Loan and learned prefixes before a vowel (auto-, radio-) may take a hyphen too; native prefixes (ge-, be-, ver-) always take the diaeresis.
- For the internal mechanics of the dots, see spelling with the diaeresis; for full compound rules, see compound hyphenation.
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Start learning Afrikaans→Related Topics
- Spelling with the DiaeresisA2 — The deelteken on ë, ï, ö and ü marks a new syllable where two vowels meet — and you can derive it from morpheme boundaries instead of memorising it.
- When Compounds Take a HyphenB2 — Most Afrikaans compounds are written solid, but a hyphen steps in when two vowels would clash at the seam (see-eend), with proper nouns and abbreviations (Wes-Kaap, A-vlak), and for clarity.
- Spelling with the CircumflexA2 — When to write the circumflex (kappie) on ê ô î û — it marks a long, distinct vowel, separates minimal pairs like sê and se, and often marks the spot where a g has dropped out (brug → brûe).
- Syllabification and End-of-Line HyphenationB2 — How to split Afrikaans words at the end of a line — break between syllables by the maximal-onset principle, keep digraphs together, divide compounds at their seam, and use the diaeresis instead of a hyphen for vowel hiatus.
- Afrikaans Spelling: OverviewA1 — A map of the Afrikaans orthographic system — its diacritics, vowel doubling, and homophone traps — and where each rule lives.