Questions & Answers about Kvöldið er fallegt.
The ending -ið is the definite article attached to the noun.
- kvöld = evening (indefinite: “an evening / evening”)
- kvöldið = the evening (definite)
In Icelandic, the word for “the” is usually not a separate word, but is added as an ending:
- bíll = a car → bíllinn = the car
- hús = a house → húsið = the house
- kvöld = evening → kvöldið = the evening
So Kvöldið er fallegt literally means “The evening is beautiful.”
Kvöld is a neuter noun in Icelandic.
That matters because:
- The definite ending -ið is the neuter singular nominative/accusative definite ending.
- The adjective fallegt has to agree with the noun in gender, number, and case. Since kvöldið is neuter singular nominative, the adjective also takes the neuter singular nominative form: fallegt.
So:
- masculine: fallegur
- feminine: falleg
- neuter: fallegt
Because kvöldið is neuter, you must say fallegt, not fallegur or falleg.