Dagurinn er fullkominn.

to be

Breakdown of Dagurinn er fullkominn.

• dagurinn: the day
• fullkominn: perfect

Questions & Answers about Dagurinn er fullkominn.

What does dagurinn mean and why does it end with -inn?

dagurinn is the definite form of dagur (“day”), so it literally means “the day.” In Icelandic you don’t use a separate word for “the” – you add a suffix to the noun. For masculine nouns like dagur, the indefinite nominative is dagur, and the definite nominative is dagurinn.

What case, number and gender is dagurinn, and how can I tell?

• Case: nominative (it’s the subject of the sentence)
• Number: singular
• Gender: masculine
You can recognize the nominative masculine–singular definite by the -inn ending on dagurinn.

Why does the adjective fullkominn also end with -inn rather than something like -ur?

Adjectives in Icelandic agree with their noun in gender, number and definiteness. Here dagurinn is masculine, singular and definite, so fullkominn takes the masculine‐singular‐definite ending -inn. If the noun were indefinite masculine singular you’d see a different pattern for many adjectives (often -ur), but fullkominn is a special case (see next question).

Is fullkominn a past participle or an adjective? Can I break it down?