Questions & Answers about Døren er låst, så jeg kan ikke komme ind.
Because døren means the door, while dør means door.
In Danish, the definite article is usually attached to the end of the noun:
- en dør = a door
- døren = the door
This is very different from English, where the is a separate word.
Because dør is a common gender noun in Danish, and common gender nouns usually form the definite singular with -en.
So:
- en dør = a door
- døren = the door
Compare:
- en bil → bilen
- en stol → stolen
If a noun were neuter instead, it would usually take -et in the definite singular:
- et hus → huset