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Lykillinn er fastur, svo ég get ekki opnað hurðina.

Lykillinn er fastur, svo ég get ekki opnað hurðina.
The key is stuck, so I can’t open the door.

Breakdown of Lykillinn er fastur, svo ég get ekki opnað hurðina.

ég
I
vera
to be
ekki
not
opna
to open
hurðin
the door
svo
so
lykillinn
the key
geta
to be able (can)
fastur
stuck
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Questions & Answers about Lykillinn er fastur, svo ég get ekki opnað hurðina.

Why is it Lykillinn and not just lykill?

Lykillinn is lykill (key) with the definite article attached: -inn = the.

  • lykill = a key / key
  • lykillinn = the key

Icelandic usually puts the as a suffix on the noun (instead of a separate word like English).

What case is Lykillinn in, and how do I know?

It’s nominative singular because it’s the subject of the sentence (the thing that is something):
Lykillinn er fastur = The key is stuck.
With the verb vera (to be), the subject stays in the nominative.

Why is the adjective fastur ending in -ur?

Because adjectives agree with the noun they describe in gender, number, and case.
lykill is masculine, singular, nominative, so the adjective takes the masculine nominative singular form:

  • masculine nom. sg.: fastur
    (You’ll see different forms with other genders/cases, e.g. föst / fast / föstu, depending on context.)
Does fastur mean fixed or stuck here?

In this context it means stuck (as in jammed and not turning/coming loose).
While fastur can sometimes translate as fixed/firm/secure, with things like keys, lids, screws, etc., it commonly means stuck/fast.

Why is there a comma before svo?

Because svo here works like so / therefore, linking two clauses:
Lykillinn er fastur, svo ... = The key is stuck, so ...
In Icelandic, it’s normal to put a comma between the first clause and the result clause introduced by svo.

What is svo doing grammatically—does it change word order?

Yes. When svo means so/therefore and introduces a main clause, it typically triggers verb-second (V2) word order: the finite verb comes right after the first element.
So after svo, the first element is ég, and the finite verb get comes next:
svo ég get ... (not svo ég ekki get ...)

Why is it ég get ekki opnað and not ég opna ekki?

ég get ekki opnað means I can’t open (inability). It uses:

  • geta = can / be able to (finite verb: get)
  • a second verb in the infinitive: opna or opnað (see next question)

ég opna ekki would mean I don’t open / I’m not opening (simple negation of the action), which is a different idea from not being able to.

Why is it opnað and not the infinitive opna?

Both can be heard, but geta commonly takes either:

  • the infinitive: geta ekki opna
  • or a form often called the supine/past participle in this construction: geta ekki opnað

In everyday Icelandic, get ekki opnað is very common and natural for can’t manage to open / can’t get open.

Where does ekki go, and could it be somewhere else?

In this kind of sentence, ekki normally comes after the finite verb (get) and before the non-finite verb/object:
ég get ekki opnað hurðina.

You generally don’t put ekki before get in standard word order.

Why is it hurðina and not hurðin or hurð?

Because hurðina is accusative singular definite: the door as the direct object of opna (to open).

  • hurð = a door (indefinite base form)
  • hurðin = the door (nominative, typically subject)
  • hurðina = the door (accusative, typically object)

Since you’re opening it, it’s the object → accusative.

Does the key being stuck imply it’s stuck in the lock?

The sentence doesn’t explicitly say in the lock, but it strongly suggests a common scenario: the key is stuck (in a lock) or jammed so you can’t use it to open the door. If you needed to be explicit, you could add a location phrase (e.g., “in the lock”), but the given sentence is natural as-is.

How would I pronounce Lykillinn er fastur, svo ég get ekki opnað hurðina?

A rough guide (not perfect IPA, but helpful):

  • Lykillinn ≈ LIH-kih-tlin (with a “tl” sound)
  • er ≈ ehr
  • fastur ≈ FAH-stur
  • svo ≈ svoh
  • ég ≈ yeh-gh (a soft “gh” at the end)
  • get ≈ geht
  • ekki ≈ EH-kih
  • opnað ≈ OP-nath (ð is often a soft “th” sound)
  • hurðina ≈ HUR-thih-na (ð ~ “th”)