Answer :

The word itself is a masculine word so no there is no feminine version. But it is to be used freely between the two, that is just the way it is grammatically used.
If the word ends in an "a" then it is feminine. If it ends in an "o" then it is masculine. 
EX: 
disordenad(a) - feminine 
disordenad(o) - masculine 

To make an inanimate object masculine, the person you're describing has to be a boy. To make the object feminine, the person you're describing has to be a girl. Same with personality. 
EX: 
Ella es disordenada. 
El es disordenado. 

Some words don't have a masculine or feminine form. if a word ends with an "e" than that means it doesn't have a masculine or feminine form. 
EX: Inteligente. It doesn't end in an "o" or "a" therefore, it is can be used as either masculine or feminine. 

EX: 
El es inteligente. 
Ella es inteligente. 

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