Disdain.

Insolence.

Disparagement.

Sarcasm.

In Sandra Bernhard’s new show, “Without You I’m Nothing” at Theater J, she kvetches continually, whether she’s sneering at vacuous celebrity-speak from a fashion magazine, mocking mediocre singers or voicing contempt for Sarah Palin.

But in the end, oddly and subtly, Bernhard’s message is positive.