This is the 1962nd most frequent Swedish word.
sjunka
"Sink" or "decline."
Here, 'sjunka' is used to describe a decrease or lowering of the temperature.
Temperaturen började sjunka snabbt på kvällen.
The temperature started to drop quickly in the evening.
In this sentence, 'sjunka' denotes the literal sense of an object sinking in water.
Fartyget började sjunka efter att ha träffat ett isberg.
The ship began to sink after hitting an iceberg.
Here, 'sjunka' portrays a metaphorical use, indicating a decline in emotional state or courage.