This is the 4470th most frequent German word.
kälter
"Kälter" means "colder" in English.
Comparison to indicate a decrease in temperature between two winters.
Der Winter dieses Jahres ist kälter als der letzte.
This year's winter is colder than the last one.
Describing a gradual reduction in temperature over days.
Es wird jeden Tag ein wenig kälter.
It gets a little colder each day.
Reacting to a perceived drop in temperature in the environment.