A sense of apathy and lassitude brought about by either societal or personal stagnation. Akin to languor, but more closely tied to existentialism and post-war Europe.
As seen in the film L'Avventura, by Michelangelo Antonioni. As characterized in post-war Europeanliterature.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.