Om skåpet är tomt igen, måste vi köpa kaffe efter jobbet.

Skåpet is the definite singular form, meaning the cupboard / the cabinet.

• ett skåp = a cupboard
• skåpet = the cupboard

Swedish usually puts the definite article at the end of the noun as a suffix, instead of using a separate word like the in English.

Because skåp is an ett-word (a neuter noun), the adjective has to agree with it.

• en stol är tom = a chair is empty
• ett skåp är tomt = a cupboard is empty

So tomt is the neuter form of tom.

Here, om means if.

So Om skåpet är tomt igen introduces a condition: If the cupboard is empty again...

A learner should know that om can also mean about in other sentences, so the meaning depends on context.

This is a very common Swedish word order pattern.

In a main clause, Swedish usually follows the V2 rule: the finite verb must come in the second position.

The sentence begins with the subordinate clause:

Om skåpet är tomt igen

After that, the main clause starts, and the finite verb måste comes before the subject vi:

• Om skåpet är tomt igen, måste vi köpa kaffe ...

If the main clause stood alone, it would be:

• Vi måste köpa kaffe efter jobbet.

But when another element comes first, Swedish moves the finite verb into second position.

Because måste is a modal verb, and modal verbs in Swedish are followed by the infinitive without att.

• måste köpa = must buy
• kan komma = can come
• vill äta = want to eat

So måste vi köpa is correct, not måste vi att köpa.

Here kaffe means coffee in a general, uncountable sense, like a substance.

• köpa kaffe = buy coffee

If you say ett kaffe, that usually means a coffee as one serving, for example in a café.

So in this sentence, kaffe is the natural choice because it means buying coffee in general, not one cup.

Igen means again.

Here it modifies the idea that the cupboard has become empty another time:

• Om skåpet är tomt igen = If the cupboard is empty again

Its placement is natural here, at the end of the subordinate clause. Swedish often puts words like igen fairly late in the clause.

Efter jobbet means after work or more literally after the work/day at work.

• efter = after
• jobbet = the job / the work

In Swedish, jobbet is often used idiomatically to mean work in everyday speech, not necessarily one specific job in a narrow sense.

So efter jobbet is a very common way to say after work.

Swedish often uses the definite form in expressions where English does not.

• efter jobbet = after work

This is a fixed, natural everyday expression. Even though English says after work without the, Swedish commonly says efter jobbet with the definite form.

A rough pronunciation guide is:

SKAW-pet

A bit more carefully:

• skå has an å sound, roughly like the vowel in British law
• pet sounds a bit like peht

Also, the sk before å is pronounced with a sh-like sound in standard Swedish, so skåp sounds closer to shope/shawp than to English skap.

A rough guide is:

MOS-teh or MOH-steh, depending on accent

Important points:

• å is not pronounced like English a in cat
• the word has two syllables: mås-te

You may also hear slightly different vowel qualities depending on region, but the standard pronunciation is close to MOH-steh.

Yes, that is grammatically possible.

Both are correct:

• Om skåpet är tomt igen, måste vi köpa kaffe efter jobbet.
• Vi måste köpa kaffe efter jobbet om skåpet är tomt igen.

The difference is mainly one of focus:

• Starting with Om skåpet är tomt igen emphasizes the condition first.
• Starting with Vi måste köpa kaffe ... emphasizes the action first.

Skåp is a general word for a cabinet, cupboard, or sometimes a closet-like storage unit, depending on context.

So skåpet could refer to:

• a kitchen cupboard
• a storage cabinet
• another kind of enclosed storage unit

The exact English word depends on the situation.