postrational 

Taking postmodernism one step too far.

We are experiencing postrational politics in this election.

postrational by Jane Lorraine October 16, 2008

post-rational 

Clinging to a belief that was once rational but current circumstances have rendered irrational.

At the Democratic National Convention, some Hillary supporters clung to the post-rational belief that Hillary could be the Democratic nominee.

post-rational by Jayrosh October 16, 2008