This is the 10369th most frequent Swedish word.
kallare
Colder.
The word 'kallare' is used as a comparative adjective to denote a difference in temperature where today is colder than yesterday.
Vädret idag är mycket kallare än igår.
The weather today is much colder than yesterday.
Here, 'kallare' is again used as a comparative adjective to describe which room has a lower temperature compared to others.
Kan du ställa ölflaskorna i kallare rummet?
Could you place the beer bottles in the colder room?
In this sentence, 'kallare' indicates a progressive decrease in temperature, describing the change experienced by the ground.