dyka means "to dive" — to plunge below the surface of water, and by extension to drop, swoop, or descend steeply. It belongs to the small, awkward family of mixed verbs: the preteritum is the strong, vowel-changed dök (the y → ö of the old second ablaut class), but the supine in modern written Swedish is the weak dykt, not a strong form. So the perfect is har dykt. This split is exactly what makes the verb a trap, and it is the single most important thing to get right on this card.
Principal parts
| Infinitive | Present | Preteritum (past) | Supine | Imperative | Group |
|---|---|---|---|---|---|
| dyka | dyker | dök | dykt | dyk | Mixed: strong preteritum (y→ö), weak supine |
Read the row carefully. The infinitive and present keep y (dyka, dyker). The past changes the vowel to ö (dök) — that is the genuinely strong step, and it has no ending. But the supine is the weak dykt, formed with a plain -t on the dyk- stem, not a strong -it form. The agreeing past participle is likewise weak: dykt (en/ett) — en dykt ubåt is rare in practice; speakers reach for nedsänkt or rephrase. The official language authority (Isof) is explicit: dyka normally takes the strong dök in the past, but in the supine the weak dykt is the only form usable in writing.
Hon dyker varje morgon innan jobbet.
She dives every morning before work. dyker — present, vowel y.
Vi dök ner till vraket på tjugo meters djup.
We dived down to the wreck at twenty metres' depth. dök — strong past, vowel ö.
Jag har aldrig dykt med haj förut.
I've never dived with sharks before. har dykt — perfect, weak supine in -t.
Use 1: present, past and perfect — the literal "dive"
In its core sense, dyka covers diving underwater (scuba, free-diving, a header off a board) and any steep downward plunge — a bird, a plane, a price.
Pelikanen dyker rakt ner efter fisken.
The pelican dives straight down after the fish. Present, literal swoop.
Aktiekursen dök tjugo procent på en enda dag.
The share price dived twenty percent in a single day. dök — figurative steep drop, still the strong past.
Hade du redan dykt när larmet gick?
Had you already dived when the alarm went off? hade dykt — pluperfect, still weak supine dykt.
Use 2: dyka i — "dive into"
With the preposition i, dyka i means to dive into something, literal or figurative: a pool, a project, a pile of work.
Barnen dök i poolen så fort grinden öppnade.
The kids dived into the pool the moment the gate opened. dyka i — dive into.
Hon dök rakt i arbetet utan att ens ta av sig jackan.
She dived straight into the work without even taking off her jacket. Figurative dyka i.
Use 3: dyka upp — "show up, turn up, pop up"
This is the particle verb every learner needs. dyka upp does not mean "dive up" — it means to appear, show up, or turn up, usually unexpectedly or after being absent. The particle upp is stressed and follows the verb, and the whole thing conjugates on dyka: dyker upp – dök upp – har dykt upp.
Han dök upp på festen fast ingen hade bjudit honom.
He showed up at the party even though nobody had invited him. dök upp — turned up unexpectedly.
Mina nycklar dyker alltid upp där jag minst anar det.
My keys always turn up where I least expect it. dyker upp — present.
Det har dykt upp ett problem med leveransen.
A problem has come up with the delivery. har dykt upp — perfect; note the weak supine dykt even in the particle verb.
Common Mistakes
❌ Jag har dykit i havet många gånger.
Incorrect — by analogy with skriva→skrivit, but dyka's supine is the weak dykt, not 'dykit'.
✅ Jag har dykt i havet många gånger.
I've dived in the sea many times.
❌ Vi dykte ner till vraket.
Off in writing — the standard past is the strong dök, not the weak 'dykte' (which you may hear in speech but should avoid in writing).
✅ Vi dök ner till vraket.
We dived down to the wreck.
❌ Han dök upp ur problemet. (intending 'a problem came up')
Wrong subject — dyka upp means a thing/person appears; you can't 'dive up out of' a problem. Use 'det dök upp ett problem'.
✅ Det dök upp ett problem.
A problem came up.
❌ Hon dykade rakt i arbetet.
Incorrect — dyka is not a weak -ade verb; the past is the vowel-changed dök.
✅ Hon dök rakt i arbetet.
She dived straight into the work.
❌ Plötsligt dyker han upp och försvann igen.
Tense clash — present dyker upp next to past försvann. Keep the narrative in the past: dök upp.
✅ Plötsligt dök han upp och försvann igen.
Suddenly he turned up and disappeared again.
Now practice Swedish
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Start learning Swedish→Related Topics
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