ad. In an irrational manner; without reason; in a manner contrary to reason; absurdly.
the GNU version of the Collaborative International Dictionary of English
ad. In an irrational manner.
The Century Dictionary and Cyclopedia
In an irrational manner; without reason; in a manner contrary to reason; absurdly.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. in an irrational manner
Word Usage
"He might have a point to a degree, but, comically, the rather obvious thing he has overlooked is that a forum devoted to atheism attracts a lot of people who are more interested in irrationally venting their spleen than in calm reasoned argument."