After hours of doing homework in the apartment:

Chels: I'm trying to figure out if impermeable is masculine or feminine.

Lauren: Chelsea, impermeable is an adjective.

Chels: Well that's why I can't find it! It must mean something else.
(moments later)
It's a raincoat! ... and it's masculine.
(a few more moment later)
They shouldn't be the same word.

Oh, the French language. and that's my roommate, folks.