"decadence" in Spanish

Europe may swiftly slip into a dangerous form of decadence.

Now, let us not forget that Montesquieu began by writing about the grandeur and decadence of the Rome to which we are now returning.

The report, in fact, is a hotchpotch of hackneyed ideas, all of which have the same purpose, namely the inversion of decent values and the promotion of decadence.