This is the 13547th most frequent German word.
cooles
The German word "cooles" means "cool" in English, often used to describe something trendy, impressive, or fashionable.
In this sentence, 'cooles' is an adjective describing 'Auto'. It is in the nominative case and is inflected to agree with the gender, number, and case of 'Auto', which is neuter singular.
Das ist ein echt cooles Auto.
That is a really cool car.
Here 'cooles' describes 'Hemd', and just as in the previous example, it adopts the proper endings to match 'Hemd', which is neuter and in the accusative case.
Ich suche eine coole Sommerjacke und ein cooles Hemd.
I am looking for a cool summer jacket and a cool shirt.
In this example, 'cooles' qualifies 'Ereignis', which is neuter singular and in the nominative case, corresponding to the subject of the sentence.