Mindless
Part of speech: adjective
Definition: Showing a lack of forethought or sense. Having no sensible meaning or purpose. Heedless. Overly repetitive and unchallenging. Lacking a mind.
Example sentence: We knew that if the photos of CIA officers conducting authorized EIT (enhanced interrogation techniques) ever got out, the difference between a legal, authorized, necessary, and safe program and the mindless actions of some MPs (military police) would be buried by the impact of the images.
Unreasonable
Part of speech: adjective
Definition: not reasonable
Example sentence: Nothing guarantees that reasonable people will agree about everything, of course, but the unreasonable are certain to be divided by their dogmas. It is time we recognized that this spirit of mutual inquiry, which is the foundation of all real science, is the very antithesis of religious faith.