kälter
Kälter is the comparative form of the German adjective kalt, meaning “more cold” or “colder.” It is used to express a higher degree of cold and can describe weather, objects, or conditions. In everyday language it is primarily predicative, as in “Es wird kälter” or “Heute ist es kälter als gestern,” and it can also appear attributively before a noun, for example “ein kälterer Tag” or “kältere Nächte,” depending on the article and gender.
Spelling and grammar: the stem vowel changes from a to ä when forming the comparative, a pattern
Usage notes: kälter expresses a relative level of cold compared to a reference point, such as another