Forritið uppfærir sig sjálft á nóttunni.

The app updates itself at night.

Breakdown of Forritið uppfærir sig sjálft á nóttunni.

• á: at
• uppfæra: to update
• forritið: the app
• sig sjálft: itself
• nóttin: the night

Questions & Answers about Forritið uppfærir sig sjálft á nóttunni.

Why is it Forritið and not Forrit?

The suffix -ið is the suffixed definite article in Icelandic, meaning the. So:

• forrit = a program (neuter, nominative/accusative singular)
• forritið = the program (neuter, nominative/accusative singular)

Icelandic typically attaches the definite article to the end of the noun rather than using a separate word.

What does uppfærir mean, and how is the verb conjugated?

uppfærir is the 3rd person singular present of uppfæra “to update.” Mini-paradigm (present tense):

• ég uppfæri
• þú uppfærir
• hann/hún/það uppfærir
• við uppfærum
• þið uppfærið
• þeir/þær/þau uppfæra

What exactly does sig mean here?

sig is the 3rd-person reflexive pronoun in the accusative. It refers back to the subject (here, forritið, “the program”). Icelandic uses the same reflexive forms for 3rd person singular and plural:

• accusative: sig
• dative: sér
• genitive: sín

Why do we have both sig and sjálft? Isn’t that redundant?

• sig makes the verb reflexive (“updates itself”).
• sjálft is an intensifier meaning “itself (and not someone/something else).” You can say just uppfærir sig and be correct. Adding sjálft emphasizes that it updates on its own (e.g., not the user). It’s common in Icelandic to use both together.

Why is it sjálft and not sjálfur or sjálf?

Forritið is a neuter noun. The intensifier sjálfur agrees with the referent in gender, number, and case. Here we need neuter accusative singular: sjálft. Compare:

• masculine: sjálfan sig
• feminine: sjálfa sig
• neuter: sjálft sig / sig sjálft (both orders occur; see below)

Is the word order sig sjálft fixed, or can I say sjálft sig?

Both sig sjálft and sjálft sig occur in contemporary usage. With pronouns, many speakers place sjálfur after the pronoun (e.g., sig sjálfan/sjálfa/sjálft), but you’ll also see sjálfan/sjálfa/sjálft sig. Your sentence’s order (sig sjálft) is natural.

Could I use the -st “middle voice” instead of sig?

Yes. You can say:

• Forritið uppfærist á nóttunni. This is very natural and often the default way to express “updates itself / gets updated.” If you want to stress autonomy, you can add sjálfkrafa (“automatically”): Forritið uppfærist sjálfkrafa á nóttunni.

Why á nóttunni and not some other preposition?

á with the dative is widely used for time periods meaning “during/at.” á nóttunni means “at night / during the night” (in general or habitually). Other options:

• um nóttina (accusative): “during the night” (often a specific night or a span)
• á næturnar (accusative plural, definite): “at night(s)” (habitual)
• í nótt: “tonight” (a specific night)

Why is nóttunni spelled with -unni?

It’s the definite dative singular of nótt (night).

• Indefinite dative singular: nóttu
• Definite dative singular: nóttunni (nóttu + -nni → -unni in spelling) So á
  • dative gives á nóttunni (“at night / during the night”).

Is Forritið really neuter? How does that affect the rest of the sentence?

Yes, forrit is neuter. That’s why:

• the definite article is -ið: forritið
• the intensifier is sjálft (neuter accusative singular)
• the verb uppfærir is 3rd person singular (agrees in person/number, not gender)

Could I drop sjálft and just say Forritið uppfærir sig á nóttunni?

Yes. That’s fully grammatical and idiomatic. It simply states the reflexive action without extra emphasis. Adding sjálft strengthens the idea “by itself.”

What about using a more general or habitual “at night(s)”?

Use:

• á næturnar = “at nights” (habitually) Example: Forritið uppfærist á næturnar.

Can I put the time expression first?

Yes, but keep Icelandic main-clause V2 word order (the finite verb stays in second position):

• Á nóttunni uppfærir forritið sig sjálft.

If I wanted to talk about programs in general, how would I do that?

Use the plural:

• Forrit uppfæra sig (sjálf) á nóttunni. Here forrit (plural) is identical in form to the singular, but the verb is plural (uppfæra), and the intensifier would be plural neuter if you used it (e.g., sjálf for neuter plural).