This is the 6064th most frequent Spanish word.
adán
A messy or careless man.
Here, 'adán' is metaphorically used to depict someone's untidy behavior.
Con esa actitud parece un adán, pero en realidad es muy organizado.
With that attitude, he seems untidy, but in reality, he is very organized.
Here, 'adán' is used to describe an untidy or messy person.
Ese chico es un adán, siempre tiene la ropa descuidada.
That boy is untidy, he always has disheveled clothes.
In this sentence, 'Adán' is a proper noun referring to the biblical figure Adam.