Questions & Answers about Byltan var alvarleg.
Because -an is the suffixed definite article. Icelandic usually puts the on the end of the noun instead of using a separate word.
- bylta = a fall / a tumble
- byltan = the fall / the tumble
So byltan is the definite form.
Bylta is a feminine noun.
That matters because Icelandic adjectives often change form to match the noun’s:
- gender
- number
- case
Since byltan is feminine singular here, the adjective also appears in a feminine singular form: alvarleg.