This is the 357th most frequent Danish word.
sad
"Sad" in Danish means "seed" in English.
Here, 'sad' is the past tense of the verb 'sidde' (to sit), indicating the act of sitting.
Hun sad ved bordet og læste en bog.
She sat at the table and read a book.
In this sentence, 'sad' again acts as the past tense of 'sidde,' describing the position of sitting.
Hunden sad udenfor døren og ventede.
The dog sat outside the door and waited.
Here, 'sad' is used adjectivally, taken from English, to express feeling sorrow, often used informally or colloquially among younger speakers.