Við geymum búslóðina eftir því hvort geymsluklefinn er opinn.

Við means we.

It is the 1st person plural pronoun. Icelandic always capitalizes it at the start of a sentence, just like English capitalizes We.

Geymum is the present tense, 1st person plural form of the verb geyma, which means to store, to keep, or to preserve depending on context.

So:

• ég geymi = I store
• við geymum = we store

In this sentence, Við geymum ... = We store ...

Because búslóðina is the definite accusative singular form.

The base noun is búslóð, meaning something like household belongings, household goods, or furniture and possessions.

Here it is the direct object of geymum, so it appears in the accusative case. It is also definite, so Icelandic adds the definite article as a suffix.

So roughly:

• búslóð = household belongings
• búslóðina = the household belongings

Búslóð usually refers to a person’s household effects, belongings, or contents of a home—the kind of things you might move or put into storage.

It is a useful word in contexts like:

• moving house
• storing furniture
• insurance
• shipping household goods

So it is broader than just furniture, but often includes furniture along with other household possessions.

Eftir því hvort means something like depending on whether.

This is an idiomatic Icelandic pattern:

• eftir því = according to that / depending on that
• hvort = whether

Together they introduce a clause that explains what something depends on.

So:

• eftir því hvort geymsluklefinn er opinn = depending on whether the storage unit is open

This is a very natural structure in Icelandic.

Because hvort usually means whether, while ef usually means if.

In English, if and whether sometimes overlap, but Icelandic often keeps them more clearly separate.

Here the meaning is not a basic condition like if X happens, then Y happens, but rather a yes/no dependency: it depends on whether the storage unit is open.

So hvort is the more natural choice.

Because this is a subordinate clause introduced by hvort.

In main clauses, Icelandic often follows verb-second word order, but subordinate clauses usually have more straightforward word order:

• subject + verb + complement

So:

• geymsluklefinn er opinn = the storage unit is open

That is the expected order after hvort.

Geymsluklefinn is built from:

• geymsla = storage
• klefi = compartment, cubicle, cell, small room
• -inn = the definite article the

So geymsluklefinn means the storage unit, the storage compartment, or the storage locker, depending on context.

It is a masculine noun here in the nominative singular, because it is the subject of er opinn.

Because Icelandic usually expresses the definite article as a suffix on the noun, rather than using a separate word like English the.

So instead of:

• the storage unit

Icelandic often says:

• geymsluklefinn

This is completely normal Icelandic grammar.

You will see this all the time:

• hús = house

• húsið = the house

• klefi = compartment
• klefinn = the compartment

Because adjectives in Icelandic agree with the noun they describe in gender, number, and case.

Here, opinn describes geymsluklefinn, which is:

• masculine
• singular
• nominative

So the adjective must also be masculine singular nominative:

• opinn = open

Compare:

• klefinn er opinn = the compartment is open
• hurðin er opin = the door is open
• húsið er opið = the house is open

So the adjective changes form to match the noun.

Here opinn is an adjective, and er is the verb to be.

So:

• er opinn = is open

This is not a special tense or passive construction. It is simply:

• subject + to be
  • adjective

It is in the nominative singular.

You can tell because it is the subject of the clause geymsluklefinn er opinn.

The adjective opinn also matches it in nominative singular masculine, which helps confirm the analysis.

So in the subordinate clause:

• geymsluklefinn = subject
• er = verb
• opinn = predicate adjective

Only partly. Literally, eftir því can feel like according to that or in accordance with that, but in many sentences it works as part of a fixed expression meaning depending on.

So in practice, it is better to learn eftir því hvort as a useful pattern rather than translating each word too mechanically.

Yes, very much so.

A learner should get used to patterns like:

• eftir því hvort ...
• eftir því hvenær ...
• eftir því hvernig ...

These mean things like:

• depending on whether ...
• depending on when ...
• depending on how ...

So this sentence shows a very useful real Icelandic structure.

Then Icelandic would probably use a more direct conditional structure, often with ef.

For example, a conditional idea could look like:

• Ef geymsluklefinn er opinn, geymum við búslóðina. = If the storage unit is open, we store the household belongings.

But your original sentence is not simply presenting a condition. It expresses that the action varies depending on whether the unit is open, which is why eftir því hvort is a good fit.